Tag Archives: Petroglyphs

Letterboxing in Sanilac County, MI

A couple of weeks ago we were visiting Michigan’s Thumb area.  One afternoon, 54 weeks after we began letterboxing, we visited the Sanilac Petroglyphs.  Unfortunately the petroglyph area was not open.  I think the kids would have enjoyed seeing the … Continue reading

Posted in Letterboxing, Places | Tagged , , , | Leave a comment