i hate to highjacks this thread back but since there is an ebot audience... (: being new to bryce and pgm for that matter. maybe im doing something wrong. when i import the pgm i then get a terrain but split in four. and it still has the base. is that what the base and basehi attributes are for? sorry im still a little blurry. (me eyes are fine, im just an old kid with a low attent.....