Carreg Dwfn facts for kids
Carreg Dwfn is a hill in south Wales. It is also known as Careg Dwfn or Carregydwfn. This hill is about four miles southeast of Llandeilo. It is also just south of a village called Trap. Carreg Dwfn is located in the county of Carmarthenshire.
This hill is at the very western edge of the Brecon Beacons National Park. It is also part of the Fforest Fawr Geopark. The highest point of Carreg Dwfn is 283 meters (928 feet) tall. This summit is on the eastern side of a long, rocky ridge.
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What is Carreg Dwfn Made Of?
Carreg Dwfn is made from a type of rock called Twrch Sandstone. This rock used to be called Basal Grit. It formed a very long time ago during the Carboniferous period. This was a time when Earth's climate was very different.
The hill's shape is affected by natural cracks in the Earth's crust. These cracks are called faults. There are faults on the east and west sides of the hill.
Old Quarries and Nearby Rocks
You can find a few old quarries on the southern side of the hill. These quarries used to dig out gritstone. In 2008, the Brecon Beacons National Park Authority stopped all quarrying here.
To the north of Carreg Dwfn is a large quarry called Craigyrodyn Quarry. This quarry worked with a different type of rock. It dug out Carboniferous Limestone. This limestone runs in a narrow band from west to east in the area.
How Ice Shaped the Hill
During the last Ice Age, huge sheets of ice covered the land. We can see marks left by this ice on the rocks of Carreg Dwfn. These marks are called glacial scratches. They show that the ice moved across the hill.
High up on the hill, the ice moved towards the southwest. Lower down, on the south side, the ice moved more from east to west. These marks help scientists understand how glaciers moved long ago.
Can You Visit Carreg Dwfn?
Yes, you can visit Carreg Dwfn! It is known as "open country." This means you have the right to walk freely across most of the hill. This right comes from a law called the CRoW Act 2000.
There are also public footpaths around the hill. These paths run along the western, northern, and eastern sides. They make it easy to explore the area.
