Santa Clara Island is a tiny, uninhabited island in the Pacific Ocean, off the coast of Robinson Crusoe Island in a group of islands known as the Juan Fernández Islands. The island is of volcanic origin and is approximately 1 km long and 0.6 km wide. The island group is politically part of the South American country Chile, and is administratively assigned to the Regio…Santa Clara Island is a tiny, uninhabited island in the Pacific Ocean, off the coast of Robinson Crusoe Island in a group of islands known as the Juan Fernández Islands. The island is of volcanic origin and is approximately 1 km long and 0.6 km wide. The island group is politically part of the South American country Chile, and is administratively assigned to the Region of Valparaíso.