These underground tours in Philadelphia, New York, and London teach urban travelers about engineering, architecture, design, ...

Trying to decide if Moon Palace Cancun is right for you? This in-depth resort review will show you what to expect.

Travelers look beyond the usual summer spots that are cooler than the beach, with underground attractions and cavern escapes ...

MANGALURU: In a major milestone for India’s energy infrastructure, the country’s largest underground LPG storage cavern -- with a capacity of 80,000 metric tonnes -- has been completed at Bala ...

This is the second underground LPG storage cavern in India, the first being in Visakhapatnam, which has a capacity of 60,000 metric tonnes. Mangaluru's new facility surpasses that, making it a key ...

The company has developed a long-duration energy storage (LDES) system called AirBattery that relies on compressed air held in underground salt caverns – hundreds of which are found in South Germany.

The seven-level cave system in Bellevue features unique rock formations and an underground river, discovered in 1872 when a dog fell into a sinkhole.

Developed by Edinburgh energy storage specialist Gravitricity, the so-called H2FlexiStore system uses purpose built lined geological shafts to store up to 100 tonnes of pressurised hydrogen at 200 bar ...

Germany is set to host the first commercial deployment of Augwind Energy’s AirBattery system for multi-day energy storage.

WHITING — Gov. Eric Holcomb and many local elected officials from both parties gathered at the BP Whiting Refinery for the ceremonial signing of a bill that allows underground storage ...

The underground facility will comprise 19 salt caverns and associated hydrogen treatment and transfer facilities.