Thanks for stopping by folks and for your kind comments.
Yes, ahjah... this one indeed was done with
terragen. It's amazing what you can come up with, just by making minor changes for various settings. I've created some interesting world and terrain files by downloading some planet data files. 3Dem is a good little program for opening various planet dem file formats, then saving in a
terragen format for import into
terragen. Sometimes 3Dem can be a bit flakey and it won't open certain formats. It's either that or it's me that is flakey and I'm not doing something right...