Marble Arch Caves

The Marble Arch Caves are a series of natural limestone caves in County Fermanagh, Northern Ireland, near the village of Florencecourt. The caves take their name from the nearby Marble Arch, a natural limestone arch at the upstream end of Cladagh Glen, through which the Cladagh River flows. The Cladagh caves are formed by three rivers that drain from the northern slopes of Cuilcagh Mountain and join underground to form the Cladagh. On the surface, the river flows from Ireland's largest karst resurgence and one of the largest in the United Kingdom. The Marble Arch Caves are the longest known cave system in Northern Ireland, stretching 11.5 kilometers (7.1 miles), and the karst is considered to be among the best in the British Isles.

Visitors can explore a spectacular underworld of rivers, waterfalls, and winding passages at the Marble Arch Caves European Geopark in County Fermanagh. The 75-minute tours are led by expert guides. Electric-powered boats transport visitors through the vast caverns along the subterranean Claddagh River. There is also an exhibition area, an audio-visual theater, a gift shop, and a restaurant on the premises.

Location: County Fermanagh, Northern Ireland