kids encyclopedia robot

Castle Peak (Washington) facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Castle Peak
Looking south towards U.S. border, from Mt. Frosty.jpg
Castle Peak seen from Frosty Mountain
Highest point
Elevation 8,306 ft (2,532 m)
Prominence 3,226 ft (983 m)
Parent peak Jack Mountain
Listing Washington highest major summits 40th
Castle Peak is located in Washington (state)
Castle Peak
Castle Peak
Location in Washington (state)
Castle Peak is located in the United States
Castle Peak
Castle Peak
Location in the United States
Parent range Hozameen Range
North Cascades
Cascade Range
Topo map USGS Castle Peak
Type of rock Granite
First ascent 1904 USGS Survey party
Easiest route Scrambling

Castle Peak is a prominent 8,306-foot (2,532-metre) mountain summit located in the Hozameen Range of the North Cascades, on the shared border between Okanogan County and Whatcom County of Washington state. The mountain is situated 1 mile (1.6 km) south of the Canada–United States border, on the Cascade crest, in the Pasayten Wilderness, on land managed by Okanogan National Forest. The nearest higher peak is Jack Mountain, 14.8 miles (23.8 km) to the south-southwest. Castle Peak is the second highest summit of the Hozameen Range following Jack Mountain. Castle Peak is the fifth-most prominent mountain in the Pasaten Wilderness. Precipitation runoff from the mountain drains east into Castle Creek, a tributary of the Similkameen River, or west into tributaries of the Skagit River.


The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, granite spires, ridges, and deep glacial valleys. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to various climate differences.

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch. With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted. In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The "U"-shaped cross section of the river valleys are a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.


Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains. As fronts approach the North Cascades, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the west side of the North Cascades experiences higher precipitation than the east side, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.

Climbing Routes

Established climbing routes on Castle Peak:

kids search engine
Castle Peak (Washington) Facts for Kids. Kiddle Encyclopedia.