Explore underground wonders in Kentucky, from Mammoth Cave’s 400-mile system to hidden kayak tours and mysterious underwater ...

This majestic waterfall in the Florida Panhandle tumbles into a sinkhole with no known end point, and is one of many gorgeous sights in the state park.

A new species of ancient shark has been discovered at Mammoth Cave National Park in Kentucky, officials said.

A new species of shark was discovered in Kentucky's Mammoth Cave National Park.The ancient shark is called a "Macadens Olsoni."Experts say it had a distinct curved row of teeth, used to crush ...

Mammoth Cave in southern Kentucky is the world's largest cave, stretching at least 426 miles.

Mammoth Cave National Park continues to add new species of ancient sharks to the paleontological record.

Mammoth Cave in southern Kentucky is the world's largest cave, stretching at least 426 miles.

A newly identified ancient shark species, Macadens olsoni, has been at Mammoth Cave National Park. The National Park Service says Macadens olsoni likely measured less than a foot long and featured ...

The roughly half-inch tooth from the uncovered species, named the Macadens olsoni, was found in the depths of Ste. Genevieve Formation at Mammoth Cave National Park in Kentucky.

Researchers uncover a new ancient shark species, Macadens olsoni, at Mammoth Cave, revealing unique fossils and expanding knowledge of ancient marine life.

For those searching for a prime spot to view the dazzling Perseids meteor shower on Friday, look no further than Mammoth Cave National Park, which will host a Star Party from 7 to 10 p.m. During ...

(NEW YORK) -- A new species of ancient shark has been discovered at Mammoth Cave National Park in Kentucky, officials said.