Researchers from the Wildlife Conservation Society have stumbled upon a geological colossus in a remote corner of Afghanistan: a natural stone arch spanning more than 200 feet across its base.

The Czech Republic is home to the biggest natural rock arch in all of Europe: the Pravčická brána, or Pravčice Sandstone Gate, in Bohemian Switzerland National Park.

The historic December storms that drenched California and dropped record-setting snow on the Sierra also destroyed a centuries-old landmark — an iconic stone arch on a secluded beach that has ...

A massive stone archway, one of the largest natural bridges in the world, has been discovered in a remote corner of Afghanistan. The dramatic arch spans more than 210 feet (64 meters), edging out ...

A massive stone archway, one of the largest natural bridges in the world, has been discovered in a remote corner of Afghanistan. The dramatic arch spans more than 210 feet (64 meters), edging out ...

Experience this stunning sacred mountain in China - one of the country's most important peaks boasting intricate temples, ...

This morning at 11:20am local time, the world-famous Darwin's Arch collapsed in front of their eyes," the company's post read. "Some in the dive & travel industry are already referring to this now ...

This natural stone arch is at the 15.1-mile point on the Catalina Highway above the road on the left when driving up the highway. Photos by Doug Kreutz / Arizona Daily Star Facebook; ...

Arch-like rock formations can be seen elsewhere in the National Park system. Arches National Park, which is located in southeastern Utah, has more than 2,000 natural stone arches.