Ok, which one of you is the reason they had to put these particular words on this thing?

You’re not wrong, but most hump yards do have a hill that sends the rail cars down for sorting. “Hump yards, also known as classification yards, are generally segmented into three parts: the receiving yard, the classification bowl and the departure yard. A manifest train carrying mixed freight enters the receiving area and prepares for sorting by climbing a small artificial hill on the lead track. At the crest of the hill, a yard worker then uncouples from the train a single car or a block of cars that are intended for a specific destination track.”