This island is 4.5 km in length and its maximum width is 1.5 km. It is covered with tundra vegetation. There was a small Chukchi settlement on the southern end of the island called Kolyuchino but as of 1987, there was no village and very rare traces of former human presence such as separate logs and coals.
On the nearby shore there is the settlement of Nutepel'men, located north of the Rypatynonel'gyn Lagoon and south of the Pyngopil'gyn Lagoon. Kolyuchinskaya Bay, further south, is named after Kolyuchin Island. Administratively this island and its surrounding area belongs to the Chukotka Autonomous Okrug of the Russian Federation.
In September 1933 Soviet ice-breaker Chelyuskin got crushed by pack ice near Kolyuchin Island. The passengers and crew were rescued by air in a dramatic and much publicised operation which made heroes of Captain Vladimir Voronin and expedition leader Otto Schmidt.