NgeruktabelNgeruktabel is an island of the Koror state of Palau in the South Pacific.Geography and historyNgeruktabel is the second largest island of Palau and the largest one of the Rock Islands. Like other Rock Islands, Ngeruktabel is uninhabited today. However, the local oral history identifies at least five ancient villages existing in the late prehistoric times. The local population migrated northward to Koror and Babeldaob. Depopulation is recorded as being primarily associated with warfare.