Bolshaya Udina Volcano
Bolshaya Udina belongs to Klyuchevskoy Volcano group made up of 14 volcanoes on the eastern range. It is located in Klyuchevskoy Volcano Nature Park that is included in the UNESCO World Cultural and Natural Heritage List.
With nearby Malaya Udina they are the southern volcanoes of the group. Reaching a height of 2,923 meters, Bolshaya Udina is a stratovolcano with two levels. The first one (1,200-1,800m) looks like a shield volcano badly damaged with steep 10-15° slopes. The second (1,800-2,923m) has a cone shape with 20-25° slopes. Its 400 meters wide crater is occupied by a glacier. The date of the last eruption of this extinct volcano is unknown.