"Fir Manach" meaning the tribe of Manach. It is often referred to as Ireland’s “Lake District”. County Fermanagh is a predominantly rural region with its geography dominated by two lakes: Upper Lough Erne and Lower Lough Erne. These 70 km worth of lakes are known collectively as Lough Erne, are now linked to the River Shannon and its waterways, via the Shannon-Erne Waterway Canal, making the entire system the longest navigable inland waterway in Europe.