The main attraction of Lanzarote is the cave Cueva de Los Verdes. It is on the North of the island under the lava fields of the volcano Corona. This is the largest lava cave in the world - it stretches for 6 kilometers, some of its rooms reach 24 meters wide and 15 meters in height. The cave was formed when a river of molten basalt from the side of the crater of the Crown continued to flow under the cooled and solidified layer of lava down into the sea. So get the natural tunnel with fanciful shapes of walls and vaults. In one of the halls of the cave concert hall created.