Explorers entered a freezing water tunnel expecting a small cave — but the camera revealed something extraordinary. Beyond the narrow, flooded passage lay a massive underground chamber lined with ...

Millions of years of underground history awaits at Florida Caverns State Park. Go for a hike and then a guided cavern tour ...

A hidden blue hole, deep within a river cave, continues to baffle explorers. Dive into the mystery behind this stunning and unexplainable natural phenomenon. Donald Trump's executive order changing ...

Julian Charrière made his name creating art inspired by — and interrogating — nature. Now, his new water and sound ...