Zavaritski Caldera

Zavaritski Caldera (Вулкан Заварицкого, Vulkan Zavaritskogo) is a caldera located in the central part of Simushir Island, Kuril Islands, Russia. Lake Biryuzovoe partially fills the youngest of three nested calderas on the volcano.

The volcano is named after Alexander Nikolayevich Zavaritski, scientist of the Academy of Sciences of the Soviet Union.