Katlahraun

Katlahraun is lava that flowed about 2,000 years ago and entered the sea. Sudden damming at the shore caused a large, circular lava pond to form. Some lava solidified, but the remaining liquid escaped. The site now contains beautiful and various lava formations. 

Katlahraun is a geosite within Reykjanes Uneco Global Geopark.