Mountains

A centuries-old lookout post still sits atop a natural stone spire.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

Bohol's unusually shaped hills turn brown in the summer months.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall, but rather lightning.

A historic observatory precariously perched at the "Top of Europe."

You can climb to the summit of Black Mountain, as long as you sign the waiver.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The highest point in Louisiana, Driskill Mountain at 535 feet above sea level.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

The highest peak in the state of Vermont has some interesting features.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

The tallest unclimbed mountain in the world remains poorly charted out of respect for local spirits.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

Earth's greatest purely vertical drop at 4,101 feet.

Mysterious hillside with a continuously burning natural fire.