The Cairnholm Museum was once a church, and when Jacob and his father first saw it, they believed it to be the Priest Hole where they would be staying.
It is run by Martin Pagett, and houses the Old Man. The Old Man is actually a young man who died in the bogs centuries ago, most likely used as a human sacrifice, and was found in the seventies by turf cutters who were digging for peat. All of the other exhibits are currently unknown.