The Sodor Ironworks is a large foundry where scrap metal is delivered, gets melted down to become molten and is then used for constructing other things, especially for making furniture and buildings. The site consists of a large smelting shed, a lot of sidings and a turntable, as well as a heap of twisted scrap metal and scrapped engines. The steam engines find the Sodor Ironworks very scary and frightening, especially in the dark, when fizzling sparks fall from huge ladles full of molten metal and when spooky shadows move around.