It was about 1980, and my sister and I were taking a children's pottery class in a mill building with a waterwheel. We took the class twice because we enjoyed it so much. At one point, we got into the basement and saw an underground tunnel with old-fashioned light bulbs strung down it. It was quite a surprise to us! The instructor told us that it led all the way to the Martha Mary Chapel, and it came up behind the pulpit.

Now, as I look back on childhood, I know I've been wrong about such things, and it may be that I was wrong about that. But I've been wondering about it, especially given a posting I found here alleging that, "underneath Greenfield Village is a honeycomb of passageways."

Anyway, it would be nice to know where that mill building is, if it still stands. I haven't been able to find it when I've gone back as an adult.