Pagan is an island of the Northern Mariana Islands

Northern Mariana Islands

The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands , is a commonwealth in political union with the United States, occupying a strategic region of the western Pacific Ocean. It consists of 15 islands about three-quarters of the way from Hawaii to the Philippines...

 chain,
located at 18.10°N 145.76°E, approximately 320 kilometers north
of Saipan

Saipan

Saipan is the largest island of the United States Commonwealth of the Northern Mariana Islands , a chain of 15 tropical islands belonging to the Marianas archipelago in the western Pacific Ocean with a total area of . The 2000 census population was 62,392...

.

Pagan has an area of 47.23 km² (18.24 sq mi), making it the fourth largest island of the Northern Marianas, and consists of two stratovolcano

Stratovolcano

A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

es joined by a narrow strip of land.
The stratovolcano at the northeast end of the island, at 18.13°N 145.8°E,
has an altitude of 570 m; the other, at the southwest end at
18.075°N 145.725°E, is 548 m high.
It was inhabited during historical times, but a 1981 eruption forced the evacuation of its inhabitants.