Some of my terrain, I recently did for my brother (he is fielding a DK of Krieg IG army) :
Trench line 1 :
Las-Gun bunker :
Trench line 2 :
Thunderfire/heavy weapon/thudd-gun/Mortar... trench system :
Ammo dump/Objective :
Heavy weapon, AA-gun, etc... emplacement :
Heavy-Bolter + trench :
As I enjoyed making those, I'll make a third bunker, and maybe a radio-relay and/or barracks.
Cpt Stahl.