'To oversimplify, it's a really big hole in the ground in Arizona--1 mile deep & 277 river miles long'
the Grand Canyon
THE NATIONAL PARK SYSTEM: To oversimplify, its a really big hole in the ground in Arizona--1 mile deep & 277 river miles long
To oversimplify, it's a really big hole in the ground in Arizona--1 mile deep & 277 river miles long
To oversimplify, it's a really big hole in the ground in Arizona--1 mile deep & 277 river miles long
THE NATIONAL PARK SYSTEM
the Grand Canyon
THE NATIONAL PARK SYSTEM