Part of the Works Projects Administration, this area apparently was once a center of education. The nearby Geological Benchmark (not the kind tracked on the web) verifies it was still active in 1957. You're looking for a tall cylinder containing various bookmarks, log sheet, and a couple of pencills. Be sure to check out the area a little while you're visiting.
This cache was originally placed by Mr. Bubba on Sept 24. 2006. ( GCYGB5 )
FTF was The Illustrious John52 on Sept 26. 2006 as shown on the original log.