1956 summer hiking and water trek category III in Eastern Sayan Mountains: Idarskoe - Tushinskoe - Chyornoe bologorya - Medvezhye lake - ascend to Peak Grandiozniy - Kazyr river - Minusinks
Vasiliy Korolyov (leader), Igor Dyatlov, Moisey Akselrod, Petr Bartolomey, Aleksey Budrin