Portugal's Algarve coast is home to countless natural wonders and stunning landscapes. Discover the Benagil Cave and beach for a unique coastal experience.

When scientists crawled into Mammoth Cave —a.k.a. the largest known cave system on the planet— they weren’t expecting company ...

Exploring hidden caves by kayaking offers a unique adventure for those seeking to discover the world's natural wonders ...

Sea Lion Caves holds the title of the largest sea cave in the United States. Formed roughly 25 million years ago, the main cavern covers about two acres with a ceiling that rises 125 feet.

Both Troglocladodus trimblei and Glikmanius careforum, members of the extinct ctenacanth genus (Ctenacanthus), have been ...

North America's deepest gorge, Hells Canyon, which slithers along the border of Idaho and Oregon, is a surprisingly new ...

Wisconsin may be known for its cheese and lakes, but beneath its rolling hills and limestone cliffs lies a world of wonder ...

Differential erosion leads to the formation of headlands and bays ... like with this section of eroded headland with a sea cave, arch and stack. These features are created by the sea.

The basic tour through Carlsbad Cavern is the Big Room Route, a 1.25-mile, self-guided underground stroll around the ...

Onac and his colleagues studied a light-colored band on the submerged bridge within the cave as well as calcite encrustations that formed on the bridge during times when the sea level was higher ...