Kunashir Island

Kunashir Island (Russian: Кунаши́р; Japanese: 国後島, Kunashiri-tō; Ainu: クナシㇼ or クナシㇽ, Kunasir), possibly meaning Black Island or Grass Island in Ainu, is the southernmost island of the Kuril Islands, which are controlled by Russia and claimed by Japan (see Kuril Islands dispute).

It lies between the straits of Kunashir, Catherine, Izmena, and South Kuril. Kunashir is visible from the nearby Japanese island of Hokkaidō from which it is separated by the Nemuro Strait.

• Area: 1,490 km²
• Length: 123 km
• Width: 4–30 km

Kunashir is formed by four volcanoes which were separate islands but have since joined together by low-lying areas with lakes and hot springs. All these volcanoes are still active: Tyatya (1,819 m), Smirnov, Mendeleev (Rausu-yama), and Golovnin (Tomari-yama).

The island is formed with the volcanic and crystalline rocks. The climate is humid continental with very heavy precipitation especially in the autumn and a strong seasonal lag with maximum temperatures in August and September. The vegetation mostly consists of spruce, pine, fir, and mixed deciduous forests with lianas and Kuril bamboo underbrush. The mountains are covered with birch and Siberian Dwarf Pine scrub, herbaceous flowers or bare rocks.

Tree cores of century-old oaks (Quercus crispula) were found in July 2001 on Kunashir Island.

The primary economic activity is fishery and fishing industry. The island has a port next to Yuzhno-Kurilsk, administrative center of Yuzhno-Kurilsky District and the island's main settlement. Administratively this island belongs to the Sakhalin Oblast of the Russian Federation.