pahoehoe lava flow at nátthagi valley in iceland

geology rock mountain soil plateau wilderness terrain ridge landscape sand valley fell hill pahoehoe lava flow nátthagi iceland crust gray black molten red background dusty steam rises explore landscape activity adventure background basalt beautiful burning danger dangerous dust earth erupting eruption fagradalsfjall flow flowing gas geldingadalir geldingardalir geology glow gray hazard heat hot hot lava iceland liquid molten mountain natural nature orange outdoor outside pahoehoe red rock scenic steam texture tourism travel view volcano volcano volcanoes