basalt rock formations called church floor in kirkjubaejarklaustur kirkjugolf, southern iceland

basalt basaltic block church cobble cobbled cobbles cobblestone column columnar columns floor formation geological geology geometrical geometry granite grass hexagon iceland icelandic kirkjubaejarklaustur kirkjubaerjarklaustur kirkjugolf klaustur lava nature panorama path pattern pavement paving pentagon polygonal rock scandinavia scandinavian southern square stone surface texture travel volcanic volcano