most colorful rainbow like volcanic mount brennisteinsalda sulp

adventure background backpacking brennisteinsalda copy dangerous dramatic earth epic expedition exploring extreme fjallabak fjallabaki formation geothermal gorge gradient highland hiking iceland icelandic journey landmannalaugar landscape laugavegur lava moss mountaineering mountains nature outdoor rainbow ridge scenic space summer summit sundown sunset trail travel trek trekking trip volcanic volcano walking wander wanderlust wilderness