Smoo Cave boating tours are available between April and October, on days when the water levels are low enough to allow the boats to enter the third chamber. Tickets for the tour cost around $19 ...

Originally carved by subterranean rivers, Credence cave system was slowly pushed upward by tectonic forces, which lifted it away from water and helped ... through it like hidden passages in ...

natural pits on the Yucatan peninsula - provided the only means of obtaining drinking water. But in the mythology of this advanced civilisation, these waterholes and caves were also the entrance ...

Caves in sandstone are not common because the rock has low solubility. Therefore, they need high amounts of water to dissolve and erode to create underground voids. Meghalaya experiences some of ...