This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

When ecosystems collide in the arid Southwest.

This spectacular track has run continuously since 1882.

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

A frozen oasis lies beneath the scorching New Mexico desert.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

A clear blue swimming hole with hidden caves, still unexplored.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

One of the American Southwest's most extensive collections of Navajo rock art.

A waterfall and cave near Arroyo Seco that inspired the writings of D. H. Lawrence, Willa Cather, and Mabel Dodge Luhan.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A multi-storied adobe complex has been inhabited for more than a thousand years.

Taos Pueblo recipes, foraged ingredients, and outdoor ovens define the menu at this eatery.

A rare memento of a lost Indigenous group.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A beautiful red-faced slot canyon in northern New Mexico.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

A strange sandstone formation in the middle of nowhere presents an interesting climbing opportunity.