Jons Kapel
Jons Kapel ("John's Chapel") is a rock bluff in Denmark on Bornholm's west coast, about 7 kilometres (4.3 mi) north of Hasle. The formations are the result of the waves beating against the rock at a time when the sea level was considerably higher than it is today. The cliff is 135 feet (41 m) in height. Named after a hermit who resided on the bluff, Jon's caves are visible from the beach below the rocks.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).