Mendeleev volcano is located in the southern third of the Kunashir Island, near the Yuzhno-Kurilsk

In a destroyed crater with a diameter of more than 1 km of the stratovolcano cone, a well-preserved extrusive dome rises.

Ash clouds, ash falls, pyroclastic flows, hot avalanches and lahars are a potential hazard associated with explosive eruptions of this volcano. The volcano poses a potential hazard to international and local airlines passing in the Kuriles region, since the height of its ash emissions can reach 10-15 km above sea level, ash plumes and clouds can drift hundreds and thousands of kilometers from the volcano in different directions.

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