Big Diomede is one of two rocky islands in the Bering Strait about halfway between Siberia and Alaska. Little Diomede now belongs to USA and Big Diomede (Ratmanov) to Russia. The islands are 2miles (3km) apart and between them runs the International Date Line and the border between the two countries. The islands' first European visitor was the Danish navigator Vitus Jonassen Bering on Aug. 16 (St. Diomede's Day), 1728. The inhabitants numbering under 200 are Chukchi people who are skilled seamen. The cliffs of the islands feature extensive birdlife.
There are no cruises currently listed for this port of call.