Limestone and travertine are both natural rocks with soft matte appearances, subtle variations, and a sophisticated, timeless ...

Mysterious tunnels in desert rocks may be the work of unknown microbes, hinting at a hidden world inside marble and limestone ...

Gail Harland's new book The Rock Garden is published by Amberley. Booker Prize winner Margaret Atwood wrote that the stones ...

Limestone, made from calcium carbonate, takes millions of years to form. These sedimentary rocks are born from the decay and ...

In the desert areas of Namibia, Oman, and Saudi Arabia, research work has revealed unusual structures that are probably due ...