Mysterious tunnels in desert rocks may be the work of unknown microbes, hinting at a hidden world inside marble and limestone ...

Scientists have long sought to determine the age of the moon's South Pole–Aitken (SPA) basin, the largest and oldest known ...

S trange, tiny structures have been found in the rocks around the deserts of southern Africa and the Arabian Peninsula.

It was 1997 when I had the most adventuresome vacation of my life. It revealed to me that one of the best-kept secrets in ...

Utah boasts five national parks and more than 40 state parks for visitors and residents to explore. Plus, with the state's array of small towns, mountains, ski areas and an urban hub in Salt Lake City ...

Zeedyk structures are low-cost, high-impact conservation tools helping to preserve Colorado’s threatened grasslands.

Share your adventure Tell us about one favorite part — a restaurant, a hike, a monument, a hotel room — of one of your trips.

While South Dakota and Utah's badlands might be better known, New Mexico's colorful rock formations and remote badland ...

Hydrogen from geological formations makes up about 10% of the flammable gases that form the Yanartaş flames near Cirali, ...

Famously surrounded by postcard-perfect red sandstone formations, Sedona, Arizona, provides so much to see and do.

Adjacent to Shades State Park is Pine Hills Nature Preserve, a 470-acre old-growth forest that contains some of Indiana’s ...

Adjacent to Shades State Park lies Pine Hills Nature Preserve, a 470-acre old-growth forest that contains some of Indiana’s most pristine natural areas. The preserve is home to rare plants and animals ...