D&H train working hard (1984)

Here is a nice shot showing a D&H train hard at work on August 1984. Location unknown. There is a caboose directly behind the four engines which seems to be unusual as I doubt the D&H used four pusher engines. This was well after the Beldon Tunnel "switchback" operations too, so I don't know the story on this. It also looks like there are a few TOFC flatcars about a half-dozen cars after the engines.