Backdrop 200m wide. Can be supplemented with kuid 2553853:471 SquawPeak.
Find it in scenery, name 'Backdrop'. Invisible from back. If you do not see it, rotate the board, then move/rotate the backdrop where you want it. For TRS2004, in TRS2006/7 with backdrop-function. Supplementing backdops and ground-textures available; search 'SquawPeak'