The photo shows an unvented crawl space in a cold climate. The home was built in 1885. This crawl space is attached to an adjacent concrete-floored basement. The foundation walls are made of mortared limestone.
Even in the small area captured in the photo, there are a number of problems that compromise energy efficiency, building durability, and life safety.
Next week, we will post the answers that a Building America team, NorthernStar, came up with.