New Mexico's beautiful slot canyon, with its picturesque western views, dramatic white rock formations, and endless horizon, ...

If you've already seen the Grand Canyon, make your way to this North American canyon that's even bigger (and that actually ...

When my friend Marilyn and I left Grand Canyon National Park we were on the Navajo Reservation, which covers parts of ...

The lunar canyons Vallis Schrödinger and Vallis Planck are extraordinarily deep, and scientists now know the valleys were ...

A federal judge says Arizona lawmakers and others lacked standing to sue the Biden administration over its creation of a new ...

Whether you're hiking, boating or just taking a stroll outside, the great outdoors has its dangers, and that includes the ...

PHOENIX (AZFamily) — Major trails at the Grand Canyon re-opened Thursday afternoon after being closed for nearly 20 hours following a chlorine gas leak inside the canyon last night. The closures ...