Explore the stunning Son Doong cave in Vietnam, which is so vast it requires a four-day trek to explore fully. This ...

Along with underground adventures, Mammoth Cave National Park in Kentucky offers great hiking and kayaking, too.

That's Crystal Cave, a longtime favorite of people who celebrate subterranea. Crystal Cave is the second biggest of the 275 "known" caves in Sequoia National Park, it boasts "delicate crystal ...

While exploring a forested mountainside, a group of cave explorers discovered what looked like a small hole in the ground.

Gold's value surpassed record highs this year, fueling Colombia's illegal mining boom and drawing US markets deeper into a new criminal gold rush.

From museums to zoos to a massive cave, there are plenty of family-friendly spring break destinations just a short drive from ...

Designed to develop a strategic deterrence and to shield its missile arsenal from the enemy, these underground missile cities ...

Beyond its famed caves, Elephanta Island is choking with plastic. Join a conservation group’s first step towards saving the ...

More than 6 million people went to Lake Mead National Recreation Area last year, making it the 10th-most visited site in the ...

India imports around 90% of its energy needs, leaving it vulnerable to sudden supply chain shocks, as the Iran war has shown. However, over the years, India has quietly strengthened its energy ...

If you liked this story, share it with other people. The new fish species come from five continents and a diversity of habitats, including limestone caves, peat swamps, wetlands and rivers. Most are ...

President Trump, in a rally-like speech in Kentucky, stressed familiar talking points on the economy, highlighting tax cuts and economic growth. He also boasted about the stock market, which has ...