Ketoy

Ketoy (or Ketoi) (Russian: Кетой; Japanese 計吐夷島; Ketoi-tō) is an uninhabited volcanic island located in the centre of the Kuril Islands chain in the Sea of Okhotsk in the northwest Pacific Ocean.

Geology

Ketoy is roughly circular with an area of 73 km² and a diameter of 10 km. Its name is derived from the Ainu language for "skeleton" or "bad".

The island is a complex stratovolcano lined with steep cliffs ranging from 30 metres to 60 metres on the east and south sides with the west and north being taller. The beaches on the island consist of boulders and stones. In the centre of the island is a 1.5 km wide caldera filled by a freshwater caldera lake. The terrain is undulating and steep with numerous hills, rising to two main peaks: