scenery of kerlingarfjoll mountain range on geothermal area and hveradalir trail located in central icelandic highlands on summer

above adventure attraction beautiful brown crater destination environment evening field fog gas geological geology geothermal highland hiking hill hveradalir iceland icelandic journey kerlingarfjloll landmark landscape mountain nature picturesque range ridge river rock scenery scenic season sky smoke snow spectacular steam stone sulphur summer tourism travel valley view volcano wilderness