DT announced this elsewhere, but here is a complete thread all dedicated and everything. :D
http://www.renderosity.com/mod/contest/index.php?contest_id=848
Question for DeathTwister about this contest -
We cannot change the TER in any way, which I understand and agree is the best way for a contest. What I wonder about is if we are allowed to use any Heightfield Operators (like erosion) on the TER. You might post the official policy about this on the contest site, since others might have a question about this.