With 22 national parks and monuments to its name, Arizona boasts some of the most astonishing landscapes in the country, from the Grand Canyon to the towering buttes of Monument ...

Laurel Caverns, the largest cave in the northeastern U.S., is set to become Pennsylvania's 125th state park. The cave, currently owned by the Laurel Caverns Conservancy, will be donated to the state.

Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

The Natural Bridge Caverns are home to the biggest commercial cave system in Texas. Above-ground adventures include zip lining, a rope course, a maze, gem mining, shopping and dining. But the ...

Tours led by friendly guides detail the property's history, the beautiful rows of vines and particularly, the winery caverns. Carved in the 19th century, these caverns hold approximately 2.7 ...

New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...

The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.

Tucked away in the rugged terrain of the Anza-Borrego Desert State Park is the world’s largest wooden trestle bridge, a ...

Night - Clear. Winds SW at 5 to 6 mph (8 to 9.7 kph). The overnight low will be 28 °F (-2.2 °C). Sunny with a high of 57 °F (13.9 °C). Winds from SW to SSW at 4 to 16 mph (6.4 to 25.7 kph ...