fumarole inside the crater of active volcano

active ash background big caldera climate crater east emitting environment eruption field fog form fumarola fumarole gas geology geothermal geyser heat hot iceland inside kamchatka landscape lava magma mineral mountain mutnovka mutnovsky national nature of outdoor park people rock russia smell smelly smoke steam sulfur sulfurous sulphur surface the thermal tourism travel trekking vapors view volcanic volcano wild yellow