Shannon Cave

The Marble Arch Caves are a series of natural limestone caves located near the village of Florencecourt in County Fermanagh, Northern Ireland. The caves are named after the nearby Marble Arch, a natural limestone arch at the upstream end of Cladagh Glen under which the Cladagh River flows. The caves are formed from three rivers draining off the northern slopes of Cuilcagh mountain, which combine underground to form the Cladagh. On the surface, the river emerges from the largest karst resurgence in Ireland, and one of the largest in the United Kingdom. At 11.5 kilometres (7.1 mi) the Marble Arch Caves form the longest known cave system in Northern Ireland, and the karst is considered to be among the finest in the British Isles.

The Cuilcagh Lakelands Geopark formerly known as the Marble Arch Caves Global Geopark straddles the border between Northern Ireland and the Republic of Ireland. It is centred on the Marble Arch Caves and in 2001 it became one of the first geoparks to be designated in Europe. The Geopark features various sites which demonstrate the geological and wider natural heritage of the area, as well as the cultural heritage relating to 7,000–8,000 years of recorded human occupation since the last ice age. It is jointly managed by Fermanagh and Omagh District Council and Cavan County Council.

The Calf House or Druid's Altar is a portal tomb or dolmen in Burren Forest, County Cavan, Ireland. It dates from Neolithic times. It is located close to the Giant's Leap wedge tomb.

Lough MacNean (from Irish Loch Mac nÉan, meaning 'Mac nÉan's lake') is a large freshwater lake on the border between Northern Ireland and the Republic of Ireland. It is in two parts. Lower Lough MacNean (or Lough Nilly), the smaller eastern lake, is wholly within County Fermanagh (in Northern Ireland). Upper Lough MacNean, the larger western lake, is split between Fermanagh, County Cavan and County Leitrim (in the Republic of Ireland). On the strip of land between the two lakes are the villages of Belcoo (Fermanagh) and Blacklion (Cavan). A river runs between the villages, linking the eastern and western lakes.The shape of Lough MacNean changed during the 1960s when a major draining operation took place; before this, the lake was used for eel fishing, but dredging during the drainage process decimated their numbers.

The Owenbrean River (Irish: Abhainn Bhréan or "stinking river"), is a small river in County Fermanagh, Northern Ireland which flows down from Cuilcagh Mountain before sinking underground, eventually reaching the Marble Arch Cave system.

Blacklion (Irish: An Blaic; also An Leargaidh) is a border village in west County Cavan, Ireland. It is situated on the N16 national primary road, just across the border from the County Fermanagh village of Belcoo.

Belcoo ( (from Irish Béal Cú, meaning 'mouth of the narrow [stretch of water]') is a small village and townland in County Fermanagh, Northern Ireland, 10 miles (16 km) from Enniskillen. It is on the County Fermanagh/County Cavan border beside the village of Blacklion in the Republic of Ireland. It had a population (with Holywell) of 540 in the 2011 Census. It is situated within the Fermanagh and Omagh District. The Lough MacNean Tourism Initiative has been in operation since 2003, and is an economy building project, aimed at addressing tourism needs in the area while promoting cross-border relations. Belcoo Enterprise Ltd opened in 1992 in units shared with the Belcoo Historical Society, a doctor's surgery, a chiropodist and Lakeland Community Care. The Mullycovet corn mill, which functioned from 1830 until the 1920s, is being restored. The Indigenous Resources School of Transferable Skills aims to teach marginalised groups including the unemployed, New Age travellers, the disabled, to use natural materials as a learning facility.

The Cladagh River (from Irish an Chlaideach 'washing river') is a small river in County Fermanagh, formed from three rivers and a number of streams draining off the northern slopes of Cuilcagh mountain, which combine underground in the Marble Arch Cave system. On the surface, the River Cladagh emerges from one of the largest karst resurgences in the UK, before flowing through Cladagh Glen Nature Reserve and eventually draining into the Arney River.

Holywell is a small village near Belcoo in County Fermanagh, Northern Ireland. It is within the townlands of Cavancarragh and Rushin. It had a population (with Belcoo) of 486 in the 2001 Census. It is part of the Fermanagh and Omagh area.

The Arney River is a small river in County Fermanagh, Northern Ireland, feeding from Lower Lough MacNean and into Upper Lough Erne. It meanders through a wide, flat Glacial Trough between the uplands of Fermanagh, Belmore Mountain and the Cuilcagh Mountains. The valley is characterised by wide flat lowlands enclosed by low hills. The Cladagh River drains into the Arney River. There are six bridging points on the Arney River, five of these are suitable for motorised vehicles, while one is located on private land near to the source of the river.

Belcoo Fault is a geological fault in County Fermanagh, Northern Ireland.

Abohill railway station served Abohill in County Fermanagh, Northern Ireland. The station opened in June 1886. Passenger services were withdrawn on 1 October 1957.