Watch as we handcraft a one-of-a-kind secret underwater house, complete with a hidden underground passage, using only ...

Watch the full journey of creating a stunning swimming pool with a hidden underground passage! 🏊‍♂️🌿 Using only natural ...

One of the planet’s largest underground passages, it holds more than two ... tunnels that slope relatively straightforwardly down—natural caves are nonlinear and ex-pand and contract according ...

But the primary reason to visit the caverns is to partake in one of the five underground ... hidden passages. Recent visitors particularly enjoyed the cavern tours, calling Natural Bridge Caverns ...

While it may have taken generations, it seems that the Laurel Caverns will finally be recognized as a state park. “Every ...

Flores said the team found an underground passage connecting two of Cusco’s key Inca monuments: the Temple of the Sun—which conquistadors ruined and covered with a Catholic church in the 16th ...

Researchers recently uncovered hidden structures beneath Milan's fifteenth-century Sforza Castle, including underground passages and secret walkways that were previously unknown. The findings were ...

The researchers found that the citadel does in fact hold a network of underground passages. The underground spaces that Leonardo described were likely of a military nature, though they also ...

This project, developed in collaboration with the castle itself, has identified a network of underground passages that may have both functional and strategic origins. Among these, some stand out that, ...