the red mud water boiler in valley of geysers in june on the kamchatka peninsula. russia

acidic active ancient bay been caldera concentration cone contains covered crater early eastern eruptions field flows forests formed geyser geysers have helicopter heritage june kamchatka lake large largest lava less located maly mantled melting much neighboring old part peninsula range rising river russia russian second semyachik site slopes snow sopka source stratovolcano summit takes territory than unana unesco valley volcano volcanoes vulcanian wide world years