The Búri () cave is a

lava tube A lava tube, or pyroduct, is a natural conduit formed by flowing lava from a volcanic vent that moves beneath the hardened surface of a lava flow. If lava in the tube empties, it will leave a cave. Formation A lava tube is a type of lava ca ...

located in southwestern

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

and was discovered in 1992, by the volcanologist Guðmundur Þorsteinsson. The cave was closed in 2014 by the owners of the land in cooperation with the Icelandic Speleological Society.

Location

The cave is located near

Þorlákshöfn Þorlákshöfn () is a town on the southern coast of Iceland in the Municipality of Ölfus. The town is named after Saint Thorlak who was a bishop at Skálholt. Its main importance is as a port as it has the only harbour on Iceland's southern coa ...

on the

Reykjanesskagi Southern Peninsula ( is, Suðurnes ) is an administrative unit and part of Reykjanesskagi (pronounced ), or Reykjanes Peninsula, a region in southwest Iceland. It was named after Reykjanes, the southwestern tip of Reykjanesskagi. The region ha ...

peninsula, around 28 miles southeast of

Reykjavík Reykjavík ( ; ) is the capital and largest city of Iceland. It is located in southwestern Iceland, on the southern shore of Faxaflói bay. Its latitude is 64°08' N, making it the world's northernmost capital of a sovereign state. With a po ...

Formation

The cave is located in the Leitahraun

lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or un ...

field. It was created by a subterranean lava flow, where the wall of the cave cooled quicker than the lava itself, which drained away. The largest point measures in height and width. At the end of the cave system, there is a lava fall into the place where the lava escaped. The entrance to the cave is located on the southern slope and partly covered with rocks. Wearing a helmet is highly recommended. Local tourist organizations offer guided trips into the cave.

References

Caves of Iceland Lava tubes {{Iceland-geo-stub