lava rock from a lava tube within the hallmundarhraun lava field in western iceland

art borgarfjordur borgarfjörður carving cave farm field fljotstunga fljótstunga food hallmundarhraun hand head hvitarsida hvítársíða iceland iron jewellery lava low-viscosity metal monument norse norsemen organ outlaw relief rock roof sculpture stalactites stalagmites statue temple tube viking viogelmir volcanic víðgelmir western wood