Geography of Ireland
Ireland is an island in northwest Europe in the north Atlantic Ocean. The main features include low central plains surrounded by coastal mountains. The highest peak is Carrauntoohil, which is 1,041 meters above sea level. The western coastline is rugged, with many islands, peninsulas, headlands and bays. The island is bisected by the River Shannon, which is the longest river in Ireland and flows south from County Cavan in Ulster to meet the Atlantic just south of Limerick. There are a number of sizeable lakes along Ireland's rivers, of which Lough Neagh is the largest.
The large central lowland is of limestone covered with glacial deposits of clay and sand, with widespread bogs and lakes. The Bog of Allen is one of the largest bogs. The the Giant's Causeway, in Antrim, mainly basalt formation which was caused by volcanic activity between 50–60 million years ago.
An unusual environment is present in north County Clare, in an area known as the Burren. This karst-like landscape consists of limestone bedrock, with little or no soil in the inner-most areas. There are numerous sinkholes, where surface water disappears through the porous rock surface, and extensive cave systems have been formed in some areas
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