Ana Kai Tangata
Ana Kai Tangata (officially in rapanui: Ana Kai Taŋata) is a sea cave in Easter Island that contains rock art of terns on its ceiling. It is located near Mataveri, and the cave opens up directly to the incoming surf. The cave is accessible and one of the most visited caves in Easter Island.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).