Posted by LeRoy Johnson on July 21, 2002 at 22:25:30:
In Reply to: What's Copper Canyon? posted by Phil on July 21, 2002 at 17:28:08:
Copper Canyon is one of the few areas within the park that is administratively closed to the public. However, there are ranger-guided day trips into the canyon.
There are well preserved Neogene (ca. 20 million year old) bird and mammal tracks there along with some proboscidean (elephant family) tracks. Prior to closure, many of these fossil tracks walked away. These tracks are in an ancient lake bed that is now uplifted and broken apart.
Check at the front desk at the visitor center when the guided hikes are. It is an all day trip and I highly recommend it. DO NOT ATTEMPT TO GO IN THERE ON YOUR OWN.