San Jorge Island

San Jorge has an area of 184 km2 (71 sq mi) and has less than 1000 inhabitants living in four villages.

[3] Also, peridotites associated with pyroxenites, with rare olivine and spinel, are exposed on the island.

[4] The first recorded sighting by Europeans was by the Spanish expedition of Álvaro de Mendaña on 21 April 1568.

More precisely the sighting was due to a local voyage done by a small boat, in the accounts the brigantine Santiago, commanded by Maestre de Campo Pedro Ortega Valencia and having Hernán Gallego as pilot.

They were who charted it with its present-day name, San Jorge, and also who named the narrow channel separating San Jorge from Santa Isabel Island as the Ortega channel after the commander of the expedition.