Definitely looks like the moon's surface. Good work with Terragen. I might increase the distance between the earth and moon (make one or the other slightly smaller) to add a bit more neutral space in the image. Good work. I have never used Terragen so this is amazing stuff for me to look at.
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"Blessed are they which are persecuted for righteousness' sake: for theirs is the kingdom of heaven." Matthew 5:10 (KJV)
- Timothy J. Warren
http://www.timshomepage.co.nr