Places calotropisd Wants to Go

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

A little-known hot spring haven right below the highway.

You might want to bring a rain jacket to this travertine triple waterfall.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Colorado's only active volcano last erupted around 4,000 years ago.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.