While not particularly well documented on the interwebs, some believe the first governor of Connecticut mined gold in this area, in a finger of Meshomasic State Forest, off Great Hill Pond Road. To log this find, upload a picture of yourself with what you believe could be an old mining location in the background. Please avoid private property outside the Forest property.
http://www.neexplorers.org/wp-content/plugins/leaflet-maps-marker/leaflet-fullscreen.php?marker=38
http://www.us-mining.com/connecticut/cobalt/gold-mines
https://en.wikipedia.org/wiki/John_Winthrop_the_Younger
https://www.mindat.org/loc-17109.html
https://en.wikipedia.org/wiki/Meshomasic_State_Forest
http://www.nytimes.com/1986/07/08/science/gold-lures-geologists-to-connecticut.html