Now i can't look at this map; but from what i remember the rails (and the scenery) are made by a func_conveyor, that generally is solid, if the "not solid" flag is not checked.
Kiltron's scenery is made basically by a big func_conveyor (the main "valley", where the train run), another func_conveyor for the rails.
The bridge, some rocks, the trees and the wood fence are func_trains (probably the trees are a func_train with models instead of brushes)
Originally posted by Grantax:
and how do i make it?
The wagon where the helicopter attacks, is made of func_wall, why can i then shoot through the holes?
Mmm... can you explain better what are you doing?