Opasny (dangerous) waterfall springs from Mutnaya (trouble) River. As it flows on the slopes of Mutnovsky volcano, it goes through the bottom and the wall of its north east crater and thus turns into a powerfull 80 meters-high waterfall.
Opasny waterfall flows into the canyon of the same name. The waterfall and the canyon offer varied landscapes typical of Mutnovsky volcano. It is located in South Kamchatka Nature Park which is included in the UNESCO World Cultural and Natural Heritage List.