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Kīlauea
Looking up the slope of Kīlauea, a shield volcano on the island of Hawaiʻi which is the largest and the southeastern-most of the Hawaiian islands. In the foreground, the vent of the volcano has erupted fluid lava to the left. The crater is at the peak of Kilauea, visible here as a rising vapor column in the background. The peak behind the vapor column is Mauna Loa, a volcano that is separate from Kīlauea.
Puʻu ‘Ō‘ō, a vent on the east rift zone of the Hawaiian volcano Kīlauea
Highest point
Elevation 4,091 ft (1,247 m)
Prominence 50 ft (15 m)
Geography
Kīlauea is located in Hawaii
Kīlauea
Kīlauea
Location in Hawaii
Location Hawaiʻi, United States
Geology
Age of rock 210,000 to 280,000 years old
Mountain type Shield volcano, hotspot volcano
Volcanic arc/belt Hawaiian–Emperor seamount chain
Last eruption January 3, 1983 – September 4, 2018

Kīlauea is an active shield volcano in the Hawaiian Islands, and the most active of the five volcanoes that together form the island of Hawaii. Located along the southern eastern shore of the island, the volcano is between 210,000 and 280,000 years old and emerged above sea level about 100,000 years ago.

It is the second youngest product of the Hawaiian hotspot and the current eruptive center of the Hawaiian–Emperor seamount chain. Structurally, Kīlauea has a large, fairly recently formed volcanic craters at its summit and two active rift zones.

Geology

Kīlauea is one of five subaerial (originating under water) volcanoes that make up the island of Hawaiʻi, originated from the Hawaiian hotspot. The oldest volcano on the island, Kohala, is more than a million years old, and Kīlauea, the youngest, is believed to be between 300,000 and 600,000 years of age; Kamaʻehuakanaloa (formerly Lōʻihi), on the island's flank, is younger and has yet to breach the surface. Thus Kilauea is the second youngest volcano in the Hawaiian–Emperor seamount chain, a chain of shield volcanoes and seamounts extending from Hawaii to the Kuril–Kamchatka Trench in Russia.

Following the pattern of Hawaiian volcano formation, Kīlauea started as a submarine volcano, gradually building itself up through underwater eruptions of alkali basalt lava before emerging from the sea with a series of explosive eruptions about 50,000 to 100,000 years ago. Since then, the volcano's activity has likely been as it is now.

The volcano's foreseeable future activity will likely be much like it has been for the past 50,000 to 100,000 years; Hawaiian and explosive activity will make Kīlauea taller, build up its rift zones, and fill and refill its summit caldera.

History

The first Ancient Hawaiians to arrive on Hawaii island lived along the shores, where food and water were plentiful. Flightless birds that had previously known no predators became a staple food source. Early settlements had a major impact on the local ecosystem, and caused many extinctions, particularly amongst bird species, as well as introducing foreign plants and animals and increasing erosion rates. The prevailing lowland forest ecosystem was transformed from forest to grassland; some of this change was caused by the use of fire, but the main reason appears to have been the introduction of the Polynesian rat (Rattus exulans).

The summits of the five volcanoes of Hawaii are revered as sacred mountains. Hawaiians associated elements of their natural environment with particular deities. In Hawaiian mythology, the sky father Wākea marries the earth mother Papa, giving birth to the Hawaiian Islands. Kīlauea itself means "spewing" or "much spreading" in Hawaiian, referencing its high state of activity, and in Hawaiian mythology, Kīlauea is the body of the deity Pele, goddess of fire, lightning, wind, and volcanoes. It is here that the conflict between Pele and the rain god Kamapuaʻa was centered; Halemaʻumaʻu, "House of the ʻamaʻumaʻu fern", derives its name from the struggle between the two gods. Kamapuaʻa, hard-pressed by Pele's ability to make lava spout from the ground at will, covered the feature, a favorite residence of the goddess, with fern fronds. Choked by trapped smoke, Pele emerged. Realizing that each could threaten the other with destruction, the other gods called a draw and divided the island between them, with Kamapuaʻa getting the moist windward northeastern side, and Pele directing the drier Kona (or leeward) side. The rusty singed appearance of the young fronds of the ʻamaʻumaʻu is said to be a product of the legendary struggle.

This early era was followed by peace and cultural expansion between the 12th and late 18th century. Land was divided into regions designed for both the immediate needs of the populace and the long-term welfare of the environment. These ahupuaʻa generally took the form of long strips of land oriented from the mountain summits to the coast.

Geology Students working on east Kilauea rift zone
Students collecting GPS data for the USGS in Kīlauea's eastern rift zone in 2015

The first foreigner to arrive at Hawaii was James Cook in 1778. The first non-native to observe Kīlauea in detail was William Ellis, an English missionary who in 1823 spent more than two weeks trekking across the volcano. He collated the first written account of the volcano and observed many of its features, establishing a premise for future explorations of the volcano.

Another missionary, C. S. Stewart, U.S.N., wrote of it in his journal 'A Residence in the Sandwich Islands', which Letitia Elizabeth Landon quoted from in the notes to her poetical illustration to an engraving of a painting by William Ellis after F Howard, 'The Volcano of Ki-Rau-E-A' in Fisher's Drawing Room Scrap Book, 1832.

One of the earliest and most important surveyors of Kīlauea was James Dwight Dana, who, staying with the missionary Titus Coan, studied the island's volcanoes in detail for decades first-hand. Dana visited Kīlauea's summit and described it in detail in 1840. After publishing a summary paper in 1852, he directed a detailed geological study of the island in 1880 and 1881 but did not consider Kīlauea a separate volcano, instead referring to it as a flank vent of Mauna Loa; it was not until another geologist, C. E. Dutton, had elaborated on Dana's research during an 1884 expedition that Kīlauea came to be generally accepted as a separate entity.

Kilauea steam vent
Steam venting from fissures inside the caldera, October 2022

The next era of Kīlauea's history began with the establishment of the Hawaiian Volcano Observatory on the volcano's rim in 1912. The first permanent such installation in the United States, the observatory was the brainchild of Thomas Jaggar, head of geology at the Massachusetts Institute of Technology; after witnessing the devastation of the 1908 Messina earthquake near Mount Etna in Italy, he declared that something must be done to support systematic volcanic and seismic study, and chose Kīlauea as the site of the first such establishment. After securing initial funding from MIT and the University of Hawaiʻi, Jaggar took directorship of the observatory and, whilst its head between 1912 and 1940, pioneered seismological and observational study and observation of active volcanoes. After initial funding ran out, the Observatory was successively funded by the National Weather Service, the United States Geological Survey (USGS), and the National Park Service, before settling on the USGS, under whose banner the observatory has been operating since 1947. The main building has been moved twice since establishment, and today is positioned on the northwest rim of Kīlauea's caldera.

Eruptive history

Kīlauea eruptions in record history
Graph summarizing the eruptions of Kïlauea during the past 200 years. The Pu‘u ‘Ö‘ö- Kupaianaha eruption has continued into the 21st century. Information is sketchy for eruptions before 1823, when the first missionaries arrived on the Island of Hawai‘i. The total duration of eruptive activity in a given year, shown by the length of the vertical bar, may be for a single eruption or a combination of several separate eruptions.

Prehistoric eruptions

Rainbow and eruption of Halema`uma`u vent at Kilauea
Rainbow and volcanic ash with sulfur dioxide emissions from Halemaʻumaʻu (April 2008)

Geologists have dated and documented dozens of major eruptions over the volcano's long history, bridging the long gap between Kīlauea's oldest known rock and only extremely recent written records and historical observation. Historical lava flows from the volcano are generally recovered by scientists in one of three ways. The oldest flows, dating back 275,000 to 225,000 years, have been recovered from Kīlauea's submerged southern slope by ship-towed remotely operated vehicles. These lavas exhibit forms characteristic of early, submerged preshield-stage eruptive episodes, from when the volcano was still a rising seamount that had not yet breached the ocean surface, and their surface exposure is unusual, as in most other volcanoes such lavas would have since been buried by more recent flows.

The second method of recovering older rock is through the drilling of deep core samples; however, the cores have proved difficult to date, and several samples from depths of around 1,700 m (5,600 ft) that suggested dates as old as 450,000 years have since been found erroneous. More reliable paleomagnetic dating, limited to rocks dating from after Kīlauea's emergence from the sea, has suggested ages of around 50,000 years. Exposed flows above sea level have proved far younger. Some of the oldest reliably dated rock, 43,000 years old, comes from charcoal sandwiched beneath an ash layer on a fault scarp known as Hilina Pali; however, samples dated from higher up the scarp indicate ash deposition at an average rate of 6 m (20 ft) per thousand years, indicating that the oldest exposed flows, from the base of the feature, could date back as far as 70,000 years. This date is similar to that of the oldest dated extant lava flow, a southwestern rift zone flow with an uncorrected radiocarbon dating of approximately 4650 BC.

The oldest well-studied eruptive product from Kīlauea is the Uwēkahuna Ash Member, the product of explosive eruptions between 2,800 and 2,100 years ago. Although it has since been largely buried by younger flows, it remains exposed in some places, and has been traced more than 20 km (12 mi) from the volcano's caldera, evidence of very powerful eruptions. Evidence suggests the existence of an active eruptive center at this time, termed the Powers Caldera, whose fractures and faults lie 2 km (1 mi) outside the modern caldera. At least 1,200 years ago, lava from the Powers Caldera overtopped its rim and solidified the structure; this was followed by a period of very voluminous tube-fed pāhoehoe flows from the summit. Following cessation of activity around 400 years ago, eruptions re-centered on the eastern part of Kīlauea's summit, and concurrently activity increased at the northern end of the eastern rift zone.

1410 to 1790

The longest-duration major eruption witnessed by native Hawaiians took place from about 1410 to 1470. Lasting around 60 years, the 'Ailā'au eruption's effusive flow covered most of Kīlauea, north of the East Rift Zone in what is known as the Puna District. Most likely due to the duration of this flow, the summit collapsed around the period of 1470–1510, creating the caldera that is known today.

Following this effusive period and caldera collapse, Kīlauea entered a 300-year period of explosive eruptions from around 1510 to 1790 as discovered by the radiocarbon dating of the Keanakākoʻi Tephra. This tephra was formed after eruptions hundreds of meters into the sky led to ash covering the area.

1790 to 1934

The earliest reliable written records of historical activity date back to about 1820, and the first well-documented eruption by westerners occurred in 1823, when the volcano was first put under observation. One pre-contact eruption in particular, a phreatomagmatic event in 1790, was responsible for the death of a party of warriors, part of the army of Keōua Kuahuʻula, the last island chief to resist Kamehameha I's rule; their death is evidenced by a set of footprints preserved within the Hawai‘i Volcanoes National Park which are listed on the National Register of Historic Places. Kīlauea has been the site of 61 separate eruptions since 1823, easily making it one of the most active volcanoes on Earth.

The upper sulphur bank, Kilauea Volcano, 1855, watercolour by James Gay Sawkins
Kīlauea's upper sulphur bank; painting by British geologist James Gay Sawkins, 1855

During its observed history, the volume of lava erupted by Kīlauea has varied widely. In 1823 Kīlauea's summit caldera was far deeper than it is today, but was in the process of filling up under nearly continuous summit eruption, with 3 km3 (1 cu mi) of lava erupted there alone by 1840. The period between 1840 and 1920 saw approximately half that in eruptive volume, and in the thirty years between then and about 1950, the volcano was unusually quiet and exhibited very little activity; Kīlauea's eruptive volume has increased steadily since then, with present activity comparable to that of the early 1800s.

The length and origin of these eruptions have also varied. Events last anywhere between days and years, and occur at a number of different sites. Half of all eruptions occur at or near Kīlauea's summit caldera. Activity there was nearly continuous for much of the 19th century, and after a reprieve between 1894 and 1907, continued onwards until 1924. There have been five historical eruptions at the volcano's relatively quiet southwestern rift zone, and 24 along its more active eastern rift zone, mostly along its upper section.

The volcano's observed history has mostly been one of effusive eruptions; however, this is a relatively recent occurrence. Prior to the arrival of the first Europeans on the island, Kīlauea was the site of regular explosive activity, evidenced then by tribal chants referencing the volcano's fickle nature, and today by geological records of an explosively active mode of past activity. Although explosive activity still occurs at the volcano, it is not as intense as it once was, and the volcano would become much more dangerous to the general public if it returned to its old phase of activity once more.

Kīlauea erupted in 1823 and 1832, but the first major eruption since the 1790 event occurred in 1840, when its eastern rift zone became the site of a large, effusive Hawaiian eruption over 35 km (22 mi) of its length, unusually long even for a rift eruption. The eruption lasted for 26 days and produced an estimated 205 to 265 million cubic meters of lava; the light generated by the event was so intense that one could reportedly read a newspaper in Hilo at night, 30 km (19 mi) away.

1891-kilauea
Painting of the 1891 eruption

The volcano was active again in 1868, 1877, 1884, 1885, 1894, and 1918, before its next major eruption in 1918–1919. Halemaʻumaʻu, then a small upwelling in the caldera floor, was topped by a lava lake that then drained, before refilling again, forming an enormous lava lake and nearly reaching the top edge of the caldera before draining once more. This activity eventually gave way to the construction of Mauna Iki, building up the large lava shield on the volcano's southwest rift zone over a period of eight months. The eruption also featured concurrent rift activity and a large amount of lava fountaining.

Activity in 1921–1923 followed. The next major eruption occurred in 1924. Halemaʻumaʻu, a fully formed pit crater after the 1919 event and the site of a sizable lava lake, first drained, then quickly began sinking into the ground, deepening to nearly 210 m (689 ft) beneath a thick cloud of volcanic ash. Explosive activity began on May 10 of that year, blowing rock chunks weighing as much as 45 kg (99 lb) 60 m (197 ft) out, and smaller fragments weighing about 9 kg (20 lb) out as far as 270 m (886 ft), and, after a brief reprieve, intensified through a major blast on May 18, when an enormous explosive event caused the eruption's only fatality. The eruption continued and formed numerous eruption columns up to and beyond 9 km (6 mi) in height, before slowly petering down and ending by May 28. Volcanic activity was soon confined to the summit, and ceased completely after 1934. From 1823 to 1924, the volcano erupted 15 times, with an additional 11 subsidence events occurring at the summit.

1952 to 1982

Mauna Ulu eruption episode 12
The Mauna Ulu eruption of 1969 generated a 300-metre (1,000 ft)-high lava fountain

After the Halemaʻumaʻu event, Kīlauea remained relatively quiet, and for a time, completely silent, with all activity confined to the summit. The volcano came alive again in 1952, with an enormous lava fountain 245 m (800 ft) high at Halemaʻumaʻu. Multiple continuous lava fountains between 15 and 30 m (50 and 100 ft) persisted, and the eruption lasted 136 days. Eruptions occurred soon after in 1954, 1955, and 1959, capped by a large event in 1960, when fissure-based phreatic eruption and earthquake activity gave way to a massive ʻaʻā flow that overran multiple evacuated communities and resorts; the resulting summit deflation eventually caused the ever-active Halemaʻumaʻu to collapse even further.

From 1960 on, eruptive events occurred frequently until August 2018. The period 1967–1968 saw a particularly large, 80-million-cubic-meter, 251-day event from Halemaʻumaʻu. This event was superseded the very next year by the marathon Mauna Ulu eruption, a large effusive eruption which lasted from May 24, 1969, to July 24, 1974, and added 230 acres (93 ha) of new land to the island. After eruptive activity had died down, there was a magnitude 7.2 earthquake that caused a partial summit collapse, after which activity did not resume at Kīlauea until 1977. At the time, Mauna Ulu was the longest flank eruption of any Hawaiian volcano in recorded history. The eruption formed a new vent, covered a large area of land with lava, and added new land to the island. The eruption started as a fissure between two pit craters, ʻĀloʻi and ʻAlae, where the Mauna Ulu shield would eventually form. Both pāhoehoe and ʻaʻā lava erupted from the volcano. Early on, fountains of lava burst out as much as 540 meters (1772 ft) high. In early 1973, an earthquake occurred that caused Kīlauea to briefly stop erupting near the original Mauna Ulu site and instead erupt near the craters Pauahi and Hiʻiaka.

1983–2018

Puu Oo cropped
Puʻu ʻŌʻō at dusk, June 1983

The longest major eruption observed at Kīlauea in modern history occurred from January 1983 to September 2018. It had the longest duration of any observed eruption at this volcano. As of December 2020, it is the twelfth-longest duration volcanic eruption on Earth since 1750. The eruption began on January 3, 1983, along the eastern rift zone. The vent produced vigorous lava fountains that quickly built up into the Puʻu ʻŌʻō cone, sending lava flows down the volcano's slope.

In 1986, activity shifted down the rift to a new vent, named Kūpaʻianahā, where it took on a more effusive character. Kūpaʻianahā built up a low, broad volcanic shield, and lava tubes fed flows extending 11 to 12 km (about 7 mi) to the sea. Between 1986 and 1991, the connection between Chain of Craters Road and Hawaii Route 130 was cut, and the community of Kapa’ahu, the village of Kalapana, and the subdivisions of Kālapana Gardens and Royal Gardens were lost to the lava. A black sand beach at Kaimū was also engulfed. In 1992, the eruption moved back to Puʻu ʻŌʻō, but continued in the same manner, covering nearly all of the 1983–86 lava flows and large areas of coastline.

As of the end of 2016, the east rift zone eruption had produced 4.4 km3 (1 cu mi) of lava, covered 144 km2 (56 sq mi) of land, added 179 ha (442 acres) of land to the island, destroyed 215 structures, and buried 14.3 km (9 mi) of highway under lava as thick as 35 m (115 ft).

In addition to the nearly continuous activity at Puʻu ʻOʻo and other vents on the east rift zone, a separate eruption began at Kilauea's summit in March 2008. On March 19, 2008, following several months of increased sulfur dioxide emissions and seismic tremor, a new vent opened at Halemaʻumaʻu at Kilauea's summit in an explosive eruption. Following this event, the new crater formed in the explosion, informally named the "Overlook Crater," emitted a thick gas plume that obscured views into the vent. Several other explosive events occurred at the vent throughout 2008.

On September 5, 2008, scientists observed a lava pond deep within the Overlook Crater for the first time. Beginning in February 2010, a lava pond was visible at the bottom of the crater almost continuously through the beginning of May 2018. Lava briefly overflowed the vent onto the floor of Halemaʻumaʻu in April and May 2015, October 2016, and April 2018.

2018 eruptive episodes

USGS Kīlauea multimediaFile-1955
Lava from a fissure slowly advanced to the northeast on Hoʻokupu Street in Leilani Estates subdivision (May 5, 2018)

Beginning in March 2018, Hawaiian Volcano Observatory began to detect rapid inflation at Pu‘u ‘Ō‘ō, leading scientists to warn that the increased pressure could lead to the formation of a new vent at Kilauea.

Following weeks of increased pressure, the crater floor of the cone of Puʻu ʻŌʻō collapsed on April 30, 2018, as magma migrated underground into the lower Puna region of Kilauea's lower east rift zone. Over the next few days, hundreds of small earthquakes were detected on Kīlauea's East rift zone, leading officials to issue evacuation warnings. On May 3, 2018, new fissures formed, and lava began erupting in lower Puna after a 5.0 earthquake earlier in the day, causing evacuations of the Leilani Estates and Lanipuna Gardens subdivisions.

A seemingly related 6.9 magnitude earthquake occurred on May 4. By May 9, 27 houses had been destroyed in Leilani Estates.

Kilauea Volcano Fissure 8 by Volkan Yuksel captured on May 4th 2019 P4280280
Kilauea Volcano Fissure 8 captured on May 3rd, 2019

By May 21, two lava flows had reached the Pacific Ocean, creating thick clouds of laze (a toxic lava and haze cloud), which is made up of hydrochloric acid and glass particles.

By May 31, 87 houses in Leilani Estates and nearby areas had been destroyed by lava. Advancing lava flows caused additional evacuation orders, including the town of Kapoho. By June 4, with the lava having crossed through Kapoho and entered the ocean, the confirmed number of houses lost had reached 159. Two weeks later, the confirmed number of homes lost was 533, and as of June 25 it had risen to 657.

Effect of the 2018 lower Puna eruption on Kīlauea's summit
Kilauea summit - 2008 vs. 2018
Two views of Halemaʻumaʻu from roughly the same vantage point. At left is the view from 2008, with a distinct gas plume from the Overlook vent, the location of what would become a long-lived lava lake. At right is a view of Halemaʻumaʻu after the eruptive events of 2018, showing the collapsed crater.

Together with the outbreak of lava in lower Puna, a lava lake at Halemaʻumaʻu at Kilauea's summit began to drop on May 2, 2018. The Hawaiian Volcano Observatory warned that the lowering of the lava lake increased the potential for phreatic (steam) explosions at the summit caused by interaction of magma with the underground water table, similar to the explosions that occurred at Halemaʻumaʻu in 1924. These concerns prompted the closure of Hawaiʻi Volcanoes National Park. On May 17, at approximately 4:15 a.m., an explosive eruption occurred at Halemaʻumaʻu, creating a plume of ash 30,000 feet into the air. This marked the beginning of a series of vigorous explosions that produced significant ash plumes from Halemaʻumaʻu. These explosions, accompanied by large earthquakes and inward slumping and collapse within and around Halemaʻumaʻu, continued until early August.

2019–20: Water lake appears at the summit

In late July 2019, a water lake appeared on the bottom of Halemaʻumaʻu for the first time in over 200 years, as water from the rebounding water table began entering the crater. Afterward, the crater lake gradually grew in size. On December 1, 2020, the lake was approximately 49 metres (161 ft) deep. Within a month, the water lake would be replaced by a lava lake during the new eruption.

December 2020 – May 2021 summit eruption

Kīlauea volcano eruption 20201220
View of the eruption from outside the summit caldera, on December 20, 2020

On December 20, 2020, at 9:30 pm local time, an eruption broke out within Halemaʻumaʻu at Kīlauea's summit caldera. The US Geological Survey's Hawaiian Volcano Observatory reported that three vents were feeding lava into the bottom of Halemaʻumaʻu Crater, boiling off the water lake that had been growing since summer 2019 and replacing it with a lava lake. The eruption produced a plume that reached 30,000 feet (9,144 m) in elevation. The eruption was preceded by earthquake swarms centered at Kīlauea Caldera on November 30, 2020, and December 2, 2020, the second of which was interpreted as a small intrusion of magma. By the following morning, emergency officials reported that the eruption had stabilized and that two of the three vents remained active and continued to fill the floor of Halemaʻumaʻu with lava. By 7:30 a.m. on December 25, 2020, the lava lake had filled in 176 metres (577 ft) of the crater, and the level of the lake was continuing to rise. On January 8, 2021, the depth of the lava lake had increased to 636 feet (194 m). By February 24, the depth of the lava lake in the western, active portion had increased to 216 metres (709 ft). A spatter cone had also formed around the western vent.

The eruption continued for another few months, though activity steadily decreased. On May 26, 2021, the Hawaiian Volcano Observatory announced that Kīlauea was no longer erupting. Lava supply to the lava lake appeared to have ceased between May 11 and May 13, and the lava lake had completely crusted over by May 20. The last surface activity in Halemaʻumaʻu was observed on May 23. At the time activity ceased, the lava lake was 229 metres (751 ft) deep.

On August 23, 2021, the Hawaiian Volcano Observatory raised Kīlauea's alert status from "Yellow/Advisory" to "Orange/Watch" due to an earthquake swarm and a concurrent increase in ground deformation at the volcano's summit. The observatory stated that the activity potentially indicated "the shallow movement of magma beneath the south part of Kīlauea caldera." The observatory lowered Kīlauea's alert status back to "Yellow/Advisory" two days later after the earthquake swarm and ground deformation waned.

September 2021 summit eruption

The Hawaiian Volcano Observatory began to record increased earthquake activity and changes in ground deformation patterns at Kīlauea's summit at about noon local time on September 29, 2021. An eruption began at 3:20 p.m. local time when several fissures opened within Halemaʻumaʻu crater in Kīlauea's summit caldera. During the initial stages of the eruption, lava erupted in fountains more than 200 feet (61 m) tall, though the height of the fountains declined as the level of lava in the crater rose, partially drowning the erupting vents.

Lava continued to erupt at Halemaʻumaʻu throughout the fall. Overflight measurements from October 5, 2022, indicated that 111 million m3 (29 billion U.S. gal) of lava had been effused, and that the floor of Halemaʻumaʻu had risen 143 meters (469 ft), since the beginning of this eruption on September 29, 2021. The eruption paused on December 9, and the alert level was reduced accordingly on December 13, 2022, though seismic activity was still unsettled.

2023 summit eruptions

Eruptive activity within Halemaʻumaʻu resumed on January 5, 2023. The Halema'uma'u eruption ended 61 days later on March 7, 2023.

At about 4:44 am Pacific time on June 7, 2023, the Hawaiian Volcano Observatory (USGS) detected a glow in web camera images atop Kilauea, indicating that an eruption had begun in the Halemaʻumaʻu crater in the Kilauea caldera, within Hawaii Volcanoes National Park. According to a national park spokesperson, the volcano experienced 10,000 visitors over the next 24 hours, three times the usual number. The eruptive episode ended after twelve days of activity on June 19, 2023.

2023's third Halemaʻumaʻu eruption episode occurred from September 10 to September 16, 2023, when multiple vents opened within Halemaʻumaʻu crater and on the down dropped block to the east in Kīlauea’s summit caldera.

NASA

NASA used the area to geologically train the Apollo Astronauts in recognizing volcanic features, planning traverses, collecting samples and taking photographs.

Training took place in April 1969, April 1970, December 1970, December 1971, and June 1972. Astronauts of Apollo 12, Apollo 14, Apollo 15, Apollo 16 and Apollo 17 used this training on the Moon. Notable geologist instructors included William R. Muehlberger.

Tourism

USGS Kīlauea multimediaFile-2059 (2018-05-19)
Kīlauea's 2018 lower Puna eruption
Kilauea Crater (24475059625)
Kilauea Crater
Kilauea Crater (8375835024)
Steaming crater
Kilauea Iki, Kilauea, Haemaumau, and Mauna Loa
View from the edge of Kilauea Iki: across the caldera, Halemaʻumaʻu is emitting fume on the left side of the caldera, while Mauna Loa towers above in the background (March 2013)

Kīlauea has been a tourist attraction since the 1840s, and local businessmen such as Benjamin Pitman and George Lycurgus ran a series of hotels at the rim, including Volcano House, which is still the only hotel or restaurant located within Hawaiʻi Volcanoes National Park.

In 1891, Lorrin A. Thurston, grandson of the American missionary Asa Thurston and investor in hotels along the volcano's rim, began campaigning for a park on the volcano's slopes, an idea first proposed by William Richards Castle, Jr. in 1903. Thurston, who owned the Honolulu Advertiser newspaper, printed editorials in favor of the idea; by 1911 Governor Walter F. Frear had proposed a draft bill to create "Kilauea National Park". Following endorsements from John Muir, Henry Cabot Lodge, and former President Theodore Roosevelt (in opposition to local ranchers) and several legislative attempts introduced by delegate Jonah Kūhiō Kalaniana'ole, House Resolution 9525 was signed into law by Woodrow Wilson on August 1, 1916. It was the 11th National Park in the United States, and the first in a Territory; a few weeks later, the National Park Service Organic Act was signed into law, creating the National Park Service and tasking it with running the expanding system. Originally called "Hawaii National Park", it was split from the Haleakala National Park on September 22, 1960. Today, the park, renamed the Hawaiʻi Volcanoes National Park, is a major conservatory agency and tourist attraction, and, since 1987, a World Heritage Site.

In its early days, tourism was a relatively new concept, but grew slowly before exploding with the advent of jet airliner travel around 1959, the year Hawaiʻi became a state. Today, tourism is driven by the island's exotic tropical locations, and Kīlauea, being one of the few volcanoes in the world in a more or less constant state of moderate eruption, was a major part of the island's tourist draw. According to the National Park Service, Kīlauea is visited by roughly 2.6 million people annually, most of whom proceeded to visit the volcano from the Kilauea Visitor Center near the park entrance. The Thomas A. Jaggar Museum was also a popular tourist stop. Located at the edge of Kīlauea Caldera, the museum's observation deck offered the best sheltered view on the volcano of the activity at Halemaʻumaʻu; however, the museum closed indefinitely after the building housing it sustained structural damage from earthquakes associated with the 2018 eruptive episodes.

Kilauea at dusk
Glowing lava at sunset, seen from near Volcano House, October 2022

The Volcano House provides lodging within the park, while additional housing options are available in the nearby Volcano Village. Visitors associated with the military can find lodging at the Kilauea Military Camp. The park provides a number of hiking trails, points of interest, and guided ranger programs.

Images for kids

See also

Kids robot.svg In Spanish: Kīlauea para niños

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