But what caused the flooding? A study published in Geology on Tuesday tied another Arizona landmark, the Meteor Crater, to the formation of the Grand Canyon.

In 2002, flood waters from Canyon Lake dam reservoir in central Texas were diverted into an emergency spillway at nearly 200 times the normal flow rate. The resulting flood event, which lasted for ...

The roughly 1.5-mile loop in the San Elijo Lagoon lets hikers spot a range of birds and aquatic life and travel through a ...

The dreamscape is home to Amangiri, home of one of the country’s most luxurious resorts set amongst RecNation CEO Gary Wojtaszek’s favorite escape.

Two of Arizona's most famous landmarks may be linked by cosmic violence: the asteroid that gouged out Meteor Crater may have also caused the formation of an ancient lake in the Grand Canyon.

From the country's deepest canyon to sacred volcanic towers in the sky, these famous rock formations are as mesmerizing as they are grand.

NASA's Mars Reconnaissance Orbiter recently photographed Candor Chasma in Mars' Valles Marineris, the largest canyon in the ...

Some sort of formation may have existed 70 million years ago, he said, but “why do you have to say it’s the Grand Canyon?” Experts on both sides agreed the discussion would continue.

The new research pushes back the conventionally accepted date for the formation of the Grand Canyon in Arizona by more than 60 million years, said CU-Boulder Assistant Professor Rebecca Flowers.

Snow Canyon State Park's 7,400-acres features hiking, biking, camping and climbing options, but even a simple drive through to take in its majestic, sweeping lava flows is worth the admittance fee.

Introduction -- Purpose -- Geology of the Horseshoe Canyon Formation. Ash beds ; Coal seam or zone markers ; Palynology ; Palaeo-magnetostratigraphy -- Types of preservation and methods of study.

Compression impressions ; Casts and moulds ; Petrification ; Carbonization ; Collecting specimens ; Cataloguing, preparation, and study of specimens ; Problems encountered with interpretation of ...