The abandoned airfield quickly became a dumping ground for all sorts of Oldton rubbish.
I suspect they had a major fly-tipping problem here for a while (is this where the European fridge mountain really is, for example?). This must have been further exacerbated, according to Jonathan, by a stream of red cars arriving from lost property offices all over the UK and dumping their payloads wherever there was space for them.
How ironic if the lost town of Oldton was actually buried under a a huge pile of lost property.
At least Jonathan (again!) has also given us the mathematical means to recover all the little things we leave on trains and buses.