Not getting it, but it's truly interesting someone has done this.
http://www.daz3d.com/shop/infinito-1-0
Yes I saw this a few weeks back and it piqued my interest. I don't think it's renderer is as good as Terragen's but it looks to have a wider variety of noise. Still to see any work created by users, that'll show it's potential best ...
Cheers
Richard
Stonemason at DAZ (sorry if anyone hates DAZ) will be releasing something like a volcanic scene sometime soon. It looks pretty awesome. I'll post it here to see what everyone thinks.