Though the Grand Canyon and Yellowstone often dominate the national-park hype, Bryce Canyon National Park has quietly earned ...

Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...

Introducing the Grand Canyon / Stanley S. Beus, Michael Morales -- Precambrian crystalline core / R. S. Babcock -- Grand Canyon Supergroup : Unkar group / J. D. Hendricks, G. M. Stevenson -- Grand ...

The Canyon's Age Sparks Fierce Scientific Debate Scientists have spent over a century arguing about when the Colorado River ...

Geology of the older precambrian rocks of the upper granite gorge of the Grand Canyon / R.S. Babcock, E.H. Brown, and M.D. Clark -- The younger precambrian rocks of the Grand Canyon / Trevor D. Ford ...

A new study reveals that the impact of the Meteor crater may have caused a landslide that flooded the Grand Canyon 56,000 years ago.

When it comes to hiking through Arizona, it's hard not to become some kind of geology expert. I've likened it to someone visiting a foreign country who does not speak the language. After a few weeks, ...

A 65-year-old man died after slipping and falling at Guano Point in the Grand Canyon. Search teams found him about 130 feet ...

FLAGSTAFF, AZ (AZFamily) — Memories of our lives and loved ones are things we all cherish but often take for granted. So, what happens when the memories fade? One resident at The Bluffs of Flagstaff ...

The largest uranium producer in the United States is ramping up work just south of Grand Canyon National Park on a long-contested project that comes as global instability and growing demand drive ...

Hit the road! These Arizona scenic drives offer breathtaking views and unforgettable stops perfect for any road trip.

LOS ANGELES - The awe-inspiring Grand Canyon was probably carved about 70 million years ago, much earlier than thought, and so early that dinosaurs might have roamed near this natural wonder, a ...