The Battle of Más a Tierra was a World War I sea battle fought on 14 March 1915, near the Chilean island of Más a Tierra, between a British squadron and a German light cruiser. The battle saw the last remnant of the German East Asia Squadron destroyed, when SMS Dresden was cornered and scuttled in Cumberland Bay.

Robinson Crusoe Island is the second largest of the Juan Fernández Islands, situated 670 km west of San Antonio, Chile, in the South Pacific Ocean. It is the more populous of the inhabited islands in the archipelago, with most of that in the town of San Juan Bautista at Cumberland Bay on the island's north coast. The island was formerly known as Más a Tierra.