Republic of Ireland shares border with Northern Ireland
Geography
The state extends over an area of about five-sixths (70,273 km2 or 27,133 sq mi) of the island of Ireland (84,421 km2 or 32,595 sq mi), with Northern Ireland constituting the remainder. The island is bounded to the north and west by the Atlantic Ocean and to the northeast by the North Channel. To the east, the Irish Sea connects to the Atlantic Ocean via St George's Channel and the Celtic Sea to the southwest.
The western landscape mostly consists of rugged cliffs, hills and mountains. The central lowlands are extensively covered with glacial deposits of clay and sand, as well as significant areas of bogland and several lakes. The highest point is Carrauntoohil (1,038.6 m or 3,407 ft), located in the MacGillycuddy's Reeks mountain range in the southwest. River Shannon, which traverses the central lowlands, is the longest river in Ireland at 386 kilometres or 240 miles in length. The west coast is more rugged than the east, with numerous islands, peninsulas, headlands and bays.
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