This one I found all by myself. I'm very pleased with this family of parameters -- it feels like a real landscape that you can walk around in, albeit at the risk of crunching tiny skeletal critters underfoot. The sky is from my own photo of a Tucson evening.
I just joined DeviantArt. Not that I really feel entitled to call myself an artist when the computer does most of the work, but lately I've been having a lot of fun generating fractal imagery, and I wanted somewhere to share it that's less grudgingly accepting of such things than Flickr.
Sharing from Flickr using what is by now practially stone-age technology -- right-click on the 500x500 image to get the image link, then code in the photo page link by hand.