Thanks everyone. These were taken east of Lake Isabella, near Walker Pass... California.
Edit... here's one more.
<a href="http://www.flickr.com/photos/dotdoubledot/2223086465/" title="Hidden Desert by .: sandman, on Flickr"><img src="http://farm3.static.flickr.com/2055/2223086465_203e9d0071.jpg" width="333" height="500" alt="Hidden Desert" /></a>