Mutnovsky and Gorely are two volcanoes, respectively 2,323 and 1,829 m high, that are considered amongst the most beautiful and interesting of Kamchatka volcanoes as they have a glacier at the top and steam-flows burst out from its fissures on the surface. They represent one of the largest hydrothermal fields in the world.
The main interest of the Mutnovsky volcano is that its fumaroles are surrounded by the bright yellow colour of sulphur crystals plus boiling mud caldrons filled with black water. The acid lakes of Gorely volcano present extraordinary vistas and atmospheres; the Gorely volcano has a series of 11 craters with numerous lakes and fumaroles around and inside them.