Hello ! i created a region outside the boundaries of skyrim and all was going well until i tested it out in game and found that when entering the area there was a massive snow slope which i could not see in CK, suggesting that it was not hand placed, the next weird thing is i can walk straight threw it with out the TCL command...

am i missing something? is it auto generated LOD?

to confirm i have looked in the cell window and there is not anything that there shouldt be..

many thanks

It's LOD.

how can i sort this out?

I'm not actually sure about that one. Worldspace/Cell editing isn't really my forte, but that is LOD.

You'll have to regenerate the LOD after you've finished making your changes to the land, which is a very long-term undertaking.

Readhttp://www.creationkit.com/Creating_a_Custom_Worldspace_with_LOD (except for the "new worldspace" stuff).