The IFC site still has many buildings standing, although vandalized.
Access: it can be reached by a steep hike/bike of a few miles from the
trailhead at the end of Sneath Lane, off of I280.
Once you reach the ridge line, turn north.
You can't quite read it (even with click-to-zoom), but the red text next
to the window of this burned-out building says "NO SMOKING IN BED".
This solitary building is actually about halfway between SF-51C and SF-51L,
on the Nike road connecting the two.
Maybe it was a microwave relay.
Nike site index.
Back to Jef's web page.