great diorama. you have so many great ideas. I too like the wooden trestle idea, its hard to use playmobil parts for that and you found a doable solution
Your custom built building fits right in with the playmobil ones
ps: I do not know if you ever tried to move fire wood but using a shovel is near impossible. This American steam train used fire wood not coal. The fireman in the engine would have had the scoop to move the embers with in the fire box or ash out. He would have moved the wood by hand, hooked tool or tongs
Please keep the pictures coming
