Drie-Annen-Hohne can be a busy place as evidenced by this shot where three trains are present at the same time. Neubaulok 99 7237-3 is backing between two of the stopped trains. This is confusing as Brocken bound locomotive front-ends usually point upgrade towards the Brocken. In this case both engines point in opposite directions so it's difficult to explain what is happening here. Perhaps one train is going to, or coming from, Nordhausen.