Mammoth Cave
The 1st longest cave in the world
686km · Length
Mammoth Cave is a large limestone cave 21 km (13 mi) south of the town of Margaret River in south-western Western Australia, and about 300 km (190 mi) south of Perth. It lies within the Leeuwin-Naturaliste National Park and is surrounded by karri and marri forest. There have been extinct animal fossils found in Mammoth Cave.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).