Potential site located with Garmin etrex30

[Rye]

Found this site on a 1916 USGS topo quad. It was not there on the 1950s topo quad. I messed around with Google Earth and came up with the coordinates. My new GPS unit got me within a couple of hundred feet. The site has potential but I've not detected yet.

[URL=http://s1379.photobucket.com/user/charlottefloods/media/IMG_20150110_143009_493_zps426202c1.jpg.html] [/URL]

[URL=http://s1379.photobucket.com/user/charlottefloods/media/IMG_20150110_142828_622_zps0e07ccae.jpg.html] [/URL]

 

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[keith2004]

have you looked at the site on NETR Online ? Historic Aerials ? or Maps & Geography | Topics - Library of Congress ,lots of info there.