Mongan Bog is a peat bog in County Offaly, Ireland. The bog is located east of Clonmacnoise, a monastic site on the river Shannon. A nature reserve covering about 120 ha protects part of the bog.
The River Shannon is the major river on the island of Ireland, and at 360 km in length, is the longest river in the British Isles. It drains the Shannon River Basin, which has an area of 16,900 km2, –
River Shannon from Drumsna bridge, County Leitrim
The Shannon Pot, the traditional source of the river
Upper Shannon catchment (with Shannon source, Owenmore River and Boyle River Basin)