You can view the really large version of this cartoon here. Unfortunately my default size is 1000 pixels and this cartoon really needs to be seen large to appreciate Churchill’s port view. And yes, this is where the railroad ends (no one ever says it starts here).
On a side note, this is the Roadmaster’s fault, every derailment is. My dad used to say that the only job a Roadmaster had was “to catch hell when the damn train jumps the track”. Fair enough.