Quote - I tried all kinds of displacement/normal/clipping/forced extension settings with Strata 4 (which looks like your rendered terrain.  My Strata 2 is more sawtooth blade-shaped).  But I could not get the hole on top.  I'm using VueInf 8.0 and not 8.4.  Is your render from Vue or from another program?

My render isi nternal from Vue not from 3DSMax+xStream.
I installed Vue 8.4 Update xStream because it is a lot of updates that prevent crashes.
Help!