Geomorph - The Terragen of Linux?

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Everybody loves Terragen. Be it Classic or Terragen 2, this program is probably the best out there when it comes to procedural terrain generation. In gaming it's used to generate skyboxes, in the industry it's used to quickly generate whole planets, seen from space and up close.
Geomorph is not that. But when combined with Blender, it comes pretty darn close to Terragen Classic.