kerlingarfjoll volcanic mountain in geothermal area on hveradalir trail located in icelandic highlands on summer at iceland

adventure attraction beautiful brown crater destination difficulty environment famous place field fog gas geological geology geothermal highland hiking hill hveradalir iceland icelandic highlands journey kerlingarfjloll landmark landscape majestic mountain nature picturesque ridge rural rustic scenery scenic season sky smoke snow steam sulphur summer terrain tourism travel valley view volcanic volcano wilderness kerlingarfjoll area trail located range