colorful rainbow like rhyolite volcanic mountains landmannalaugar in icelandic highlands as pure wilderness in iceland, summer,

abstract adventure background backpacking basalt caldera colorful crater dangerous earth epic expedition exploring extreme geothermal highland hiking iceland illuminated journey landmannalaugar landscape laugavegur lava light moss mount mountaineering mountains nature outdoor pattern rainbow ridge rough scenic summer summit sunshine surface texture trail travel trek trekking trip volcano wild wilderness