The great fissure eruption of volcano Plosky Tolbachik (July 6, 1975 – December 10, 1976) resulted into two breaks: one in the north and one in the south. The Northern one is located 18km to the south-east of the main crater.
The eruption that created it lasted 72 days between July and September 1975. It resulted in three cinder cones and covered the whole landscape with a thick layer of lava. It is part of the Klyuchevskoy Volcano Nature Park included in the UNESCO World Cultural and Natural Heritage List.