Very nice

It has that nice clear, crisp yet dusty feel to it.
This shot reminds me of some great memories. I used to take my 12" LX200 out in the field, and one time took it to Hyden for a few nights. It was cloudy most nights and then on the last night it cleared up but there was a howling easterly wind. I decided to give it a shot anyway, so setup the LX on its wedge on its giant tripod (bit of an effort), and what a night!
The transparency was great, like you say you had, and after 24 minutes of exposure I ended up with one of my favorite shots (
http://www.rogergroom.com/rogergroom...m.jsp?Item=111 ). Very similar feel I think. This was on film, back in 2003.
I wouldn't darken your shot at all, it's nice not having the contrast too strong.
At the time my girlfriend and I were getting pretty darn sick of sitting around for several days just waiting for the cloud to clear (if you've ever been to Hyden you'll understand why), but in hind sight it was great to just sit around in the middle of nowhere with it stinking hot outside waiting for the cloud to clear. Do a bit of landscape photogrpahy now and then.
Oh the good 'ol days