After the cave has been opened by the action of water, creation of some of the other features of the Marble Arch caves begin. Water, containing dissolved limestone (calcite), drips or runs from ...

Travelling down 154 steps into a cave which is at its deepest 94m below ground is not how one expects to travel to a music event but this was ...

The Marble Caves are natural rock formations with curved walls covered in swirling mineral patterns. They sit on the shores of General Carrera Lake, a glacial lake in southern Chile. The lake ...

Over 300 million years ago, in the Carbiniferous period, Fermanagh was covered by a shallow, tropical ocean. Millions of shells of tiny sea creatures fell to the ocean floor after death ...