Dunes

This huge coastal nature reserve in Wales was a stand-in for the Arabian Peninsula in 'Lawrence of Arabia.'

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Mounds of fine golden sand that can rise nearly 500 feet tall.

Sand dunes from a glacial lake are preserved in this woodland park.

These otherworldly formations were shaped over millions of years by the forces of nature.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

Now home to hardy plants, these sand and gravel dunes once held back a massive prehistoric lake.

An abandoned desert hamlet swallowed up by sand.

Peek inside this sandy mailbox and you'll spot kids' letters to Santa.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.