The business end of Railcare Railvac unit 99 709 515 004-8, pictured at Long Marston on 23 April 2018, just after arriving behind 50008 Thunderer as the 6X50 11:40 Toton to Long Marston. The train is seen waiting at the locked gates. It was some considerable time before someone arrived to let the train in. The size of the hose on the back of the Railvac unit shows that it is considerably more powerful than a Dyson! It is used to suck up spent ballast, especially from around pointwork, etc. Note the lines of stored stock in the background, with EMUs 319459 & 319444 in the front.