Discover Magazine on MSN

Mammoth Cave was once home to ancient sharks — and the evidence is in the walls

Learn more about the ancient life that used to inhabit Mammoth Cave, and how the cave conditions were just right to help ...
Travel + Leisure on MSN

This national park has the longest-known cave system in the world—with over 400 miles of passages and a frozen waterfall

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

The world's longest cave that's 400 miles long and still growing

Mammoth Cave is the world’s longest known cave system, stretching over 426 miles of mapped passageways and explorers believe ...
AOL

What the Largest Cave on Earth Looks Like From Inside

Hidden inside Vietnam’s Phong Nha-Ke Bang National Park is Son Doong, the largest cave on Earth. It’s so vast that a Boeing 747 could fit through its chambers. Inside, jungles grow beneath openings in ...
Discover Wildlife

There’s a cave in Kentucky that’s 426 miles long – and fish-eating spiders lurk in it

The longest cave system in the world is named, rather fittingly, Mammoth Cave. Found underneath Kentucky’s Mammoth Cave ...
Ever After in the Woods

This Michigan Ghost Town Hides The State’s Longest Known Cave

Abandoned limestone town remnants, remote Upper Peninsula scenery, and a record-holding cave make this one of Michigan’s ...
Live Science

Ancient shark discovered deep inside world's longest cave system

The National Park Service has announced another ancient shark discovery at Mammoth Cave in Kentucky. The latest find, named Macadens olsoni, had a unique curved row of teeth and lived around 340 ...
Times Union

The world's largest underwater cave has been discovered — and may hold ancient Mayan secrets

Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...