Sarigan in Northern Mariana Islands is the result of a Holocene Era stratovolcano with no known historic eruptions, however a swarm of volcano-tectonic earthquakes took place here in the summer of 2005. The island is 95 miles north of Saipan and is 1.9 square miles. Landing on Sarigan is difficult due to perpendicular cliffs surrounding the island. It has many ravines and valleys with dense tropical vegetation.
From 1900 until 1945 Sarigan had a Chamorro population that worked on copra production. Today the island is a nature preserve and in the mid-1990’s a project was launched to rid Sarigan of its population of feral animals; today only a few cats remain. Sarigan has been proposed as a site for relocation of endangered birds from Guam and Saipan.