Places Donna McColl Wants to Go

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Climb down into the largest sinkhole in Qatar.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This extraordinary geological oddity resembles human-made pavement.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

This crack in France's seaside cliffs once hid a sinister secret.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

These spooky and unusual stone formations create an underworldly landscape.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

The spherical grains of white quartz sand give every step on this Australian beach a distinctive sound.

What was once believed to be a church floor turned out to be the artwork of geology.

A series of magical limestone formations along the coastline of the country island of Antigua.

Ancient artists in the middle of nowhere.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.