I'm kicking myself because I had some photos around, but they have obviously not survived the transfer from one job's computer to my new one and they never managed to make it to my home computer (or if they did, they didn't survive the hard disk crash of 2005). That trackage, for anybody trying to find it, is up on top of the dam itself--not connected to any other track network. I'd guess (from memory) that it only runs a half mile or so.