I have used Terragen a bit, but much prefer Vue d'Esprit for landscaping. Really nice program and cheap as hell, list is 199.00 USD
Darkon
Red bellows of flame have blackened my stones
Convulsing my frame and cracking my bones
Hell's dragons of steel who roar in their chains
Crawl into my caves to suck out my veins.....
-The Mountain P.F.M.