MDF
http://shop.microartstudio.com/battlefield-hdf-terrain-c-88.html
3mm mdf, assembly 90% without glue - really nice (32 mm scale!, not 28 like most)
Train
looks very similar (it is hard to say about scale, but the rail look this same)
http://www.ramirez.nserwer.pl/galeria/gallery/gecko/pociag2/2.jpg
http://www.ramirez.nserwer.pl/galeria/gallery/gecko/pociag2/3.jpg