breathtaking landscape of myrdalsjokull glacier, trekking trail in thorsmork, southern iceland

arctic birch blue canyon change climate ecosystem eyjafjallajokull famous fern fimmvorduhals forest geology glacier glaciers highlands hike hiking hill ice iceland icelandic krossa landmannalaugar laugavegur laugavegurinn melting moss mountains myrdalsjokull nature now park popular porsmork reserve river rock shrubs spring summer thorsmork thosmork trail trekking valley vegetation volcanism volcanos water