The DePauw Nature Park was the site of an active limestone quarry from 1917 to 1977. The limestone rock began forming 350 million years ago from the remains of animals living on the bottom of an ...

Nobody knew anything. How could it not be public knowledge for so long?' said Susan Levy, administrator of the Somerset Environment Corps.

Some residents of Hamblen County opposed a proposed limestone quarry, fearing water contamination and property devaluation.

There's nothing like diving off a two-story sandstone cliff into the cool water of a 16-foot-deep quarry. Tucked inside the Cuyahoga Valley National Park, the Quarry has offered the best cliff ...

Laurie: Could they be burrows? Tom: Maybe. Dr Tom Challands: Right here, at the top of the limestone quarry cliff face we can see that the limestone that's been exposed to the surface, the longest ...