Grand canyon, 6,000 years old - wrong ... MICHIO KAKU: And how long has this erosion been taking place? DR DAVE THAYER: Well at least 5.5 million years is what they say. MICHIO KAKU: Alright.

has established breathtaking layers of sediment and erosion that is unlike anything else on Earth. Arizona is the Grand Canyon state after all. There’s another place in Arizona that feels this way.

“It was destroyed by erosion, plate tectonics ... showed these two canyons were similar in width and length to the Grand Canyon. Vallis Schrödinger is 168 miles (270 kilometers) long and ...

Formed over thousands of years of erosion caused by hydrothermal activity, water and other natural forces, the Grand Canyon of the Yellowstone is the primary attraction in the Canyon Village area ...

The canyon is a spectacular example of arid-land erosion. It is 277 miles long, up to 18 miles wide, and over a mile deep ...

Accessible by guided tour only, Antelope Canyon is a unique geological structure formed by water erosion over millions ... about 130 miles northeast of the Grand Canyon's North Rim and just ...