A heavily decayed wooden rail carriage. Once common on the national rail system before the days when steel framed coaches eventually became the norm thanks to the advances of the second world war. In a yard full of rusting antiques, a wooden carriage can hardly maintain its structure after so many years of English weather. It's hard to pin-point the exact model but I'm fairly sure this is a Metropolitan Railway Full Third 394 (built by Ashbury, 1890).