This goes down as the single most amazing thing I have ever seen! The day was very stormy and didn't look good for a sunset of any type. Just before sunset I saw a sliver of light pop out and immediately left the shelter of my car and ran into the pouring rain to the rim of the Grand Canyon in hopes there might be a rainbow. Needless to say, when I reached the edge I was left speechless. This double rainbow lasted for over twenty minutes. I felt so lucky to have witnessed this incredible display of nature!