The striated sandstone peaks of Zion National Park glow in the moonlight as car headlights pass on the road below. Photograph by Alex Treadway, Nat Geo Image Collection Horton still has a list of ...

pushing a layer of rust-colored sandstone off of Lake Mead’s ancient structure. The person who filmed the video sent it to the National Park Service, which manages the area. The service asked ...

and sky-high sandstone beyond the visitor center gates. It’s a desert mosaic that attracts over five million people each year, and for good reason. Zion National Park is among the most beautiful ...

Changing water levels and erosion are believed to have contributed to the collapse of the geologic feature, which was formed from 190 million-year-old Navajo sandstone, the National Park Service said.

The Huffpo says Kai National Park and Reserve in Alaska is best known ... summer destinationsThe Double Arch was formed from Navajo sandstone dating back about 190 million years.

Sand Dune Arch is one of over 2,000 naturally occurring sandstone arches in Arches National Park. The Sand Dune Arch Tra ...