By studying the geological evidence.
Every one should know that the pollution is the human issue in the grand canyon anyone that did not know that is stupid
I don't know who you think "they" are, but humans did not create the Grand Canyon.
Water from the Colorado River which wasn't always the meek traveler that is found there today.
The Grand Canyon.
The Grand Canyon State.
i don't know if this is the answer your looking for but John Powell explored the grand canyon at one point.
Yes, the Grand Canyon as we know it today would look very much like the Grand Canyon of 17 million years ago.
If I'm not mistaken, lava didn't really shape the grand canyon, the Colarado River did. It slowly eroded the rock until it is the massive canyon we know today.
no i don't think that cause they(that person) could mean they want to know where in Arizona it is located
da finding the grand canyon
The most popular canyon that a majority of people know is the Grand Canyon,Arizona,U.S. The Grand canyon alone has approximately 3 million visitors a year and is a natural world heritage site, nominated in 1979. President Roosevelt of the U.S stated;"In the Grand canyon , Arizona has a natural wonder, which as far as I know, is in kind absolutely unparralleled throughout the world." Therefore it is reasonable to think, supported by this evidence that indeed the Grand canyon is the most popular canyon. Note: This can also be a matter of opinion
i dont freaking know.