This was a purely accidental discovery. While walking a back field, looking for signs of something else I was looking for, I encountered a fence line. I followed the line a short distance before finding an opening leading to a low stone wall. Climbing over the wall, I found myself in an open yard, with this saw mill.
At first, I wasn't sure as to its status, but the closer I got, the more obvious it became that no one had used it in some time. Sweet!