TerrainDetail

I know i keep harping on about this, but i honestly think blitz terrains are a bad idea. Instead build your own terrain from a blitz mesh, from a heightmap image. You won't have any terrain popping, you'll have greater control over the textures and colouring via vertex colours, and no slow down whilst the LOD determines the polycount. In most cases, it's alot faster. Plus, joining up seams with multiple terrains is alot easier, because the edges never move.

http://www.blitzbasic.com/codearcs/codearcs.php?code=1609