An excellent diving site, this incredible duo of caves is a favorite of both tourists and locals alike. The two caves—known as Cenote Dos Ojos—were created by two 70-foot sinkholes connected by a ...

The cave of Diros on the Peloponnese peninsula is a wonder of nature where an artistic miracle has been sculpted in the depths of the earth.

Aug. 30 (UPI) --Scientists have discovered ancient deposits in the Artà Cave on the island of Mallorca that suggest sea levels 3.5 to 4 million years ago were more than 50 feet higher than they are ...

Larry Mayer is headed out this week on a ship to explore the Channel Islands off the Southern California coast. Well, he’s actually exploring seafloor formations near the islands, looking for evidence ...

It's been a year since the dramatic rescue of the 12 members of the junior football team and their coach from the Tham Luang Nang Non cave in Chiang Rai Province, Thailand. The rescue put a spotlight ...

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, with strange rock formations and the occasional glow from naturally occurring ...

Just three years ago, a group of Idaho men traveled to an unnamed Western state and in an unnamed range of rugged mountains, hiked up a steep trail. At the top, they unraveled climbing ropes, stepped ...

Most people come to Pictured Rocks National Lakeshore in Michigan’s Upper Peninsula for its namesake — the colorful, mineral-stained sandstone cliffs that line mighty Lake Superior. Those cliffs are ...