Rocks

This stone in Lake Geneva was once the reference point used to determine altitude in Switzerland.

A rock that was too big to move, so the town just paved around it.

Once an integral part of Native American life, very few of these communal New England stones have survived to the present day.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

A beautiful gorge filled with streams and waterfalls.

Carved between 3500 and 1000 B.C., the distinctive carvings at this site are poorly understood.

Large rocks have been painted to whimsically resemble wild and farm animals.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

Red rock "fangs" jut out of the desert near the Extraterrestrial Highway.

This hidden gem along the Utah-Arizona border is truly worth the rugged journey.

A natural resemblance of the monster of film lore.

A doctor had this large tub carved into rocks to facilitate easier seawater bathing.

The "Key of Keys" for Washington, D.C. and the apocryphal landing place for the military campaign that started George Washington's career is now at the bottom of a well.

A former travertine mine traces the geological history of this unique desert filled with crystalline blue pools.

These modest Midwestern formations are kin to Niagara Falls' impressive cliffs, more than 600 miles away.