This is a re-working of a photo from last June. The original post (here) was an attempt at using CS2's Merge to HDR functionality. I thought it came out ok at the time, but this technique - manual blending of two exposures - gives much cleaner results: no artifacts along high contrast edges, no odd looking tones in the shaded rock of the arch, and no improbable colours in the sky.
Looking at this again makes me want to get back down to Canyonlands again in a hurry.
Read more on the blending technique.