deep, blue crevasse in glacier ice in skaftafell glacier, part of vatnajokull national park, iceland, top view

abyss arctic blue ice cold crack crevasse crevice dangerous deep europe falljokull fissure formation frozen glacial glacier hike hiking hole cap iceberg icecap iceland icelandic icy mountain national natural nature oraefi outdoor park reserve sheet skaftafell skaftafellsjokull snow svashy nafelsjokull top tourism travel tunnel vatnajokull vatnajapara kull vertical wall white winter