There is an overpass on one end of the yard, and from there I could take some photos.
Photo one is a view of the yard showing its size.
Here is the train slowly moving up the hump hill and each car is uncoupled to roll down to its proper track for classification. The time to do this was amazingly short. I have never seen a hump operation before this close, and that train was completely disassembled in about fifteen minutes.
Here is the 'front' of the train as it backs up the hump.
Another view of the hump yard. Look closely and you can see a boxcar moving down the hill to its track.
At last, just about in fifteen minutes, the last car is let go. The engineer did it all, ran the train and uncoupled the cars.
I find it interesting that there is an approach signal on the track to the hump yard.
The following link will take you to an overhead view of the yard.
http://www.flickr.com/photos/perspectivephotography/2559314053/in/photostream/