|The summit of the Kudryavy cone is somewhat elongated in the latitudinal direction, and two craters are located on it. A shallow, gentle eastern crater is almost completely enclosed. The western crater is occupied by an extrusive dome, and a powerful lava flow flows from it. The slopes of the Kudryavy cone are relatively weakly divided and, along with subordinate loose deposits, are covered with numerous lava flows up to 2-3 km long, which descend in all directions, reaching the walls of the Medvezhiya caldera. In the west, at the foot of the Kudryavy cone, there is a large extrusive dome, Men’shoy Brat, whose base diameter exceeds 1 km, the relative height reaches almost 200 m [Gorshkov, 1967].
For the last ~ 100 years, the volcano has been in a state of active solfatar-fumarole activity, against the background of which separate phreatic explosions localized near extrusion sometimes occur, the last of which occurred in 1999.
Горшков Г.С. Вулканизм Курильской островной дуги / Отв. ред. Рудич К.Н. М.: Наука. 1967. 288 с.