Geologists have uncovered the world's largest underground thermal lake in southern Albania. Fed by hot springs, this ...

The Munro Karst system in South Australia's south-east could be 2 million years old and may contain rare fossils.

The Munro Karst system was provisionally added to the list last year and efforts are underway to make the recognition permanent. A report is being prepared as part of the process to have a cave ...