columnar rock formation valley and river at vesturdalur, asbyrgi during the sunset, vatnajokull national park, iceland

asbyrgi background basalt beautiful canyon cliff column erosion formation formations geological geology gorge hexagon hexagonal hiking hljodaklettar iceland icelandic jokulsargljufur landmark landscape lava mountain national natural nature north northern panorama park rock scenery scenic sculpture stone summer sun sunrise sunset texture travel unique valley vatnajokull vesturdalur volcanic volcano wilderness wonder