Phantom Ship is a small island in Crater Lake in the U.S. state of Oregon.

It is a natural rock formation pillar which derives its name from its resemblance to a ghost ship, especially in foggy and low-light conditions.

Phantom Ship Island is mainly formed from andesite rock that dates from about 400,000 years ago, partly altered by hydrothermal activity.

[1] The island is situated on the south east end of Crater Lake and projects more than 200 m (656 ft) out from the wall of the caldera.

[2] The island forms the part of a submerged stratovolcano cone that is jaggedly sticking out of the water.