Garreg Ddu is a prominent rock formation located in the Brecon Beacons National Park in Wales. It is known for its striking appearance and is a popular destination for hikers and climbers. The name "Garreg Ddu" translates to "Black Rock" in English, reflecting its dark, rugged surface. The area surrounding Garreg Ddu features diverse wildlife and stunning landscapes, making it an ideal spot for nature enthusiasts. The rock formation is also part of the Black Mountains, which offer various trails and viewpoints for visitors to enjoy the natural beauty of the region.