Jereon has done a wonderful job on all the event logos that I've seen, especially incorporating features from the area where the event happens. So I thought I'd submit a few photos that may provide some ideas for interpetation into a logo.

Thumb Butte is a pretty significant landmark in Prescott
Here's another view of it

Here are some photos of Sedona:
http://www.experiencesedona.com/
http://www.experiencesedona.com/gallery/re...ock/default.htm
http://www.sedonaaz.gov/sedona/gallery2.aspx

It's hard to find photos of Jerome, the old mining "ghost town"
http://www.connorhotel.com/history.htm
http://www.connorhotel.com/jerome_arizona_...information.htm
Here's some better ones http://www.ghosttowngallery.com/htme/jerome.htm

I can't seem to find any decent shots of Yarnell Hill, but we've got to look for the "Congress Frog" at the bottom of the hill!
Well, there is this Topo Map that shows just how twisty Yarnell Hill is.

Just some ideas in case it's helpful.