Discover stunning hikes in Illinois for 2026! No permits needed, just lace up your boots and explore canyons, forests, and breathtaking views.

The cave includes rare aragonite crystals that form delicate, needle-like structures. These crystals are fragile and take thousands of years to grow. Flowstone cascades down the walls like frozen ...

Plan your Arizona trip with these stunning towns, packed with scenic views, local eats, and day trips you’ll talk about all ...

In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

Tonto Natural Bridge State Park sits in the mountains near Pine, and it’s home to one of the world’s largest natural ...

President Theodore Roosevelt made the area a game preserve in 1906 and created Grand Canyon National Monument in 1906, ...

More than 50,000 years ago, a meteor hit Earth and formed what we now call Meteor Crater in northern Arizona. But new ...

I've visited 50 of America's 63 national parks, so I've have earned the right to my opinion on what I consider the 20 worst ...

The Giles-House copyrighted e-book, “Geology of the Lower Owyhee River, Oregon’s Grand Canyon,” is now online at www.owyheegeology.com as a free downloadable document. An improved second edition will ...

A 30-year-old man from Idaho drowned on the Colorado River last week after he was swept overboard while running a powerful rapid in Grand Canyon National Park.