Awesome shot; did you get lucky with the timing or were you tracking the moon?
I was tracking the moon into the Canyon and have some other very nice images..
I was finished and the moon had gone behind the mountains where I was...
Coming back out and around the Canyon a few miles, I caught that glimpse where the mountains are quite a bit shorter... I barely had time to grab a camera and click off a few shots before it was gone again...
Here's one I took "on purpose"... 





