The islands have an area of 181 km2 (70 sq mi), of which 93 km2 (36 sq mi) are taken up by Robinson Crusoe (together with Santa Clara), and 33 km2 (13 sq mi) by Alexander Selkirk.
The population is 633 (all on Robinson Crusoe); of those 598 reside in the capital, San Juan Bautista, on Cumberland Bay on the north coast of the island (2002 census).
Not good. Almost all the people live on the Cumberland Bay. There was not much time to receive any warning and act upon it.