Yes, the Vishnu Schist.
P.S. LOL, it's the Kaibab Limestone! Happy april fools 2016 day!!
P.S. #2 ITS THE APRIL 2ND I LIED ITS VISHNU SCHIST!!
Yes, the Permian Period
Yes, the Permian Period
Yes, the Permian Period
Yes the Permian Period........!
The Colorado River forms the Grand Canyon
A river
Colorado River
Woodrow Wilson declared grand canyon a national park during 1919.
the grand canyon
a Grand Canyon is nothing but a big erosion.........
Copper Canyon (Spanish: Cañon del Cobre) is such landmark.
Cold :D
It is a Canyon as in the Grand Canyon.