With luck, I'll be heading to Zion NP next weekend. Can't wait. I haven't been to Red Rock country in a while so I thought that I'd try to tune up a little with some practice.
Here's a quickie I did this afternoon to get in the mood. This is from a photo I took several years ago in Zion at the end of the road - just before the narrows trail. It's not the best photo but all I have today is my little digital point & shoot.
9x12 pastel on Uart 400 paper
Here's some detail and the initial drawing after washing with some alcohol: