studlagil canyon (the basalt canyon) view of the ravine with brown glacial river and vertical basalt columns, iceland

basalt brown canyon cliff column current dramatic east europe fall flow formation geology glacial gorge hexagon hexagonal hiking hill iceland icelandic island jokla jokuldalur landmark landscape lava magma mountain nature outdoor precipice ravine river rock scenery scenic spring steady stream studlagil tourism tourist travel valley vertical view volcanic wall water columns iceland