Traveling around Eagle County, it is easy to wonder about the interesting geological features that dot the landscape. While ...

Solution caves are typically formed by a chemical reaction between limestone and groundwater that has become slightly acidified through contact with the carbon dioxide present in most soils.

Most limestone caves form when rainwater and runoff permeate the caves from above. Water and carbon dioxide mix to form carbonic acid, a very weak acid, that erodes the limestone cave walls.

From surreal limestone formations to crystal-clear rivers, Vietnam’s natural landscapes are a sight to behold. This journey ...

"We've got lots of lovely cave formations," Mary Gustafson, a Department of Natural Resources interpretive naturalist at Mystery Cave, said. It is a natural labyrinth of limestone spread out over ...

Cincinnati Museum Center’s replica limestone cave reopens this week after a two-and-a-half-year hiatus due to the COVID-19 pandemic and maintenance.

Many of these limestone caves have been covered over or destroyed by land owners and urban development. However, south of the York Valley, there are “caves” formed by natural forces that are ...

For more than 20 years, limestone caves and an old swimming pool at 48th Street and Roe Avenue in Roeland Park, Kan., have sat vacant.But city officials… ...

Coronado Cave is a limestone cave in Coronado National Memorial in southern Arizona, near the U.S.-Mexico border. It's about 600 feet long, with a main chamber and several smaller side passages.