The Mendeleev volcano is an active volcano located in the southern part of Kunashir Island, belongs to specially protected natural territories and in 1983 was awarded the status of a state monument of nature. It was named after the Russian chemist D.I. Mendeleev, but until now it is often called "Sleeping Beauty" by the people, because it visually resembles a sleeping woman.
The slopes of the volcano are a real coniferous-deciduous forest interspersed with cedar elfin and bamboo. A fumarole field is located at an altitude of 400 m. Its surface is like water in pan, as if it boils and releases columns of steam. The release of volcanic gases through fumaroles is evidence of the transition of a volcano to an intermediate stage between eruptions or its complete extinction. like water in a saucepan, the surface seems to boil and releases columns of steam.