BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY
Sulphur deposits. View of yellow sulphur deposits around vents on the crater floor of the Mutnovsky volcano on the Kamchatka peninsula, Russia. These deposits are formed when hot sulphurous gases from the volcano condense and solidify when they meet the cooler air and rocks. The main gases involved are gaseous sulphur itself and hydrogen sulphide, which is oxidised by the air to sulphur and water.
Model release not required. Property release not required.