Álftaversgígar
Álftaversgígar is a protected natural phenomena of international geological significance. An area of rootless cones (pseudocraters) formed by the Eldgjá lava flowing over wetlands in 934-940. A side road south of the ring road no.1 takes you to a panoramic spot with information panels. There is an easy hike along the signed sand track to Dýralækjasker geosite, a former shelter for travellers crossing the sands of Mýrdalssandur on foot or on horseback before the time of automobiles. Another nice place to experience these cones is in a farmed area at Þykkvabæjarklaustur.