Kerry faces the Atlantic Ocean and, typically for an Eastern-Atlantic coastal region, features many peninsulas and inlets, principally the Dingle Peninsula, the Iveragh Peninsula, and the Beara Peninsula. The county is bounded on the west by the Atlantic Ocean and on the north by the River Shannon. Kerry is one of the most mountainous regions of Ireland and its three highest mountains, Carrauntoohil, Beenkeragh and Caher, all part of the MacGillycuddy's Reeks range.