They manage to reach the end of the Tunnel of Atlantis in Lanzarote
Located on the Canary Island of Lanzarote, the Tunnel of Atlantis is one of the places of greatest geological interest in the Geopark of Lanzarote and Chinijo Archipelago, the set of Spanish islands located off the north coast of Lanzarote, both for its geological significance and for the unique diversity that lives within it.