Collapsed arches

former natural limestone arch in the Maltese island of Gozo

island in Ecuador

Ófærufoss () is a waterfall situated in the Eldgjá chasm in the western part of Vatnajökull National Park, Iceland. Until the early 1990s a natural bridge spanned the falls, but it collapsed from natural causes.

collapsed limestone arch in Aruba

an offshore natural arch in Victoria, Australia

former waterfall on the Coca River in Ecuador

rock formation and beach in Karachi, Pakistan

limestone formation located off Marsalforn on the island of Gozo in Malta

gorge in Victoria, Australia

rock formation in Tyne and Wear, United Kingdom