The volcano Berg is located in the northern part of Urup Island

The Berg volcano is a stratovolcano with a wide caldera with a diameter of about 2 km at the top, in which there is a low extrusive dome with a diameter of 700 m and a height of 200 - 250 m.

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. In addition, the outflow of lava flows onto the slopes of the volcano and the surrounding area is possibly.

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