Vatnciler Cave is one of the natural artifacts that formed in Iceland by natural conditions, as it is the result of a volcanic eruption in the nearby Burkhular crater, when surface lava from the eruption came into contact with cold air, and turned into rocks, while the lava beneath continued to flow away, leaving behind Wonderful lava tube cave. Don't miss out on a fun underworld tour filled with amazing geology, amazing rock formations and colorful volcanic rocks.