This area near the south end of Meshomasic State Forest, along what is now called Mine Brook, off Gadpouch Road, was once active with mining, particularly for cobalt and nickel, but also possibly for gold. To log this find, upload a picture of yourself with an old mining location in the background. There should be some fenced off to east of the posted location. Please avoid private property.
https://patch.com/connecticut/easthampton-ct/explore-cobalt-mine-and-ccc-camp-jenkins-in-cobalt_ff2ab3eb
https://en.wikipedia.org/wiki/Meshomasic_State_Forest
http://www.minsocam.org/MSA/collectors_corner/arc/cnchatham.htm
https://www.mindat.org/loc-17109.html
http://raregoldnuggets.com/?p=325
http://www.us-mining.com/connecticut/cobalt/nickel-mines
http://www.us-mining.com/connecticut/cobalt