Re: Gold prospecting.
At least until a few years ago, Spring Valley Park in Southern York County had gold panning lessons in the stream there every summer. According to some old county records some gold was mined in SE york County. In early colonial days a fellow had a mine somewhere in the western end of SGL 211. Author Conrad Richter, from Pine Grove made references to it in his book, The Light in the Forest. They call the area the Gold Mine and Gold Mine Road. I would think where the streams flow off the SGL would be a good place to look. Either on the west end at Dauphin PA or up near High Bridge Reservoir. With permission of the landowners of course.