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

The National Park Service opened a lottery for extended self-guided rafting trips along the Colorado River in Grand Canyon National Park this week, offering hundreds of spots for 2026.

Discover otherworldly dunes, desert canyons, lofty amusement parks, and a surprising number of waterfalls and hot springs in ...

Groundwater is life in Arizona. Find out how we’re helping Grand Canyon communities manage their limited water supplies.

The Grand Canyon covers 1,904 square miles in Arizona, and is one of the most famous National Parks in the U.S. Nearly 5 million visitors flock to the canyon ea ...

The Grand Canyon's three Inner Corridor trails had to be shut after workers discovered dangerous chlorine gas at the Roaring Springs waterfall ...

Roaring Springs, the afflicted area ... but the trails have been reopened to the public and deemed safe for recreation. Grand Canyon National Park is in the midst of a $208-million water system ...

On Jan. 15, at approximately 5 p.m., the Water Utilities team was alerted to a chlorine gas leak at the Roaring Springs Pumphouse ... all inner canyon corridor trails were temporarily closed ...

A chlorine gas leak at Roaring Springs forced the closure of all inner canyon corridor trails at Grand Canyon National Park, officials posted Wednesday evening on X, formerly Twitter. Bright Angel ...

GRAND CANYON NATIONAL PARK, AZ (AZFamily) — People can once again enjoy a hike at Arizona’s world-famous natural wonder. The National Park Service said on Wednesday evening that inner canyon ...

Since moving to Glenwood Springs in 1984 for the Glenwood Canyon construction project ... “You look at it, and there’s Grand Avenue and Midland — it’s a choke point.” He believes expanding mass ...