"We have crystalline bedrock," he said. "And it's ideal to make large rock caverns in this kind of bedrock." Places with less solid bedrock may have to resort to different underground heat storage ...

State-run Hindustan Petroleum is constructing an LPG cavern with a capacity of 80,000 tonnes that is expected to become ...

Vattenfall, SSAB and LKAB have reached the halfway point in the construction of a rock cavern storage facility in a coastal city in northern Sweden. The 100-cubic-meter facility is being ...

The government is constructing a new LPG underground rock cavern with a storage capacity of 80 thousand metric tonnes (TMT) ...

If you're visiting Branson in the summer and are on the hunt for a cool escape, consider Talking Rocks Cavern, which maintains a comfortable 63-degree Fahrenheit temperature year-round.

THE CAVERNS OFFER A COLORFUL CLUE TO THE MINERALS IN THE ROCKS. ORANGE IS IRON OXIDE, WHITE IS CALCIUM. DARK BLUE IS ZINC. LIGHT BLUE IS COBALT. GREEN INDICATES ALGAE, AND SOME MOSS GROWS BECAUSE ...

"We have crystalline bedrock," he said. "And it's ideal to make large rock caverns in this kind of bedrock." Places with less solid bedrock may have to resort to different underground heat storage ...