Watch as we construct a secret underwater house with a hidden underground passage using only primitive tools and natural ...

A homeowner was floored after detailing how he discovered an Indiana Jones-esque labyrinth of hidden chambers and tunnels underneath his home. “Found a network of tunnels and rooms under my house,” ...

Victoria Vale said the mysterious door "seemed like it hadn't been opened in a very long time," and she was determined to figure out what was behind it.

The titles of 12 such books — some of which may have been published before 2025 — are hidden below within an unrelated text ...

Looking to take an underground adventure in the state of Missouri? There are many wonderful caves you can visit, depending on ...

A Washington Post review of websites operated by the National Park Service found that edits on dozens of pages since ...

An image of and quote from Harriet Tubman have been removed from a National Parks webpage about the “Underground Railroad,” ...

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath Earth’s surface, rock and mineral formations conceal a hidden brilliance. When ...

You have to see this to believe it! We built a jaw-dropping underwater house complete with a hidden underground passage — all by hand. From epic digs to stealthy design, this build is packed with next ...

“This hidden underground marvel is one of Sequoia National Park ... boasts over three miles of surveyed passageways. Crystal Cave has been open to the public since the 1940s. Sequoia Parks Conservancy ...

The best competition shows are based on love or money. When it comes to Million Dollar Secret, no prizes for guessing it’s the latter, with the new Netflix show introducing a cast of contestants ...