How to make a moving map/background?

[lya505]

Im making a map and im not the best in hammer engine, but it is for Gmod, based on other train maps such as "gm_desert_bus_deluxe", i have made a map but I do not know how to make it "move".

[Koru]

I recommend that you use a 3D Skybox together with prop_dynamic entities to obtain a moving background.