A Curious Find on an Old Map
Recently, I happened upon an interesting find in the USGS Topographic map collection at geonames.gov (click to go to maps page, and select any map with an imprint year of 1982 or older). In a remote area of Camp Pendleton in southern California about five miles west of the town of Fallbrook, there once existed an odd layout of railroad track with a small building at the end of a spur (according to the USGS pamphlet on Topographic Symbols, it is narrow gauge single track). The roadbed is still visible in the current Google Earth satellite view, seen above.
Here's a screenshot of the 1982 USGS map, enlarged, of the area in question:
I've tried to research this railway and have found out absolutely nothing about it. My best guess is that it was used to provide moving targets for gunnery practice, since the area in which it existed is a firing range. Anyone have any other ideas or information on it?