Site: Blue Hole Quarry
Location: Williamsburg, PA Dive Type: Quarry Depth: 30' Things to see: Privately owned freshwater, spring-fed quarry in central PA used primarily for
training by local OWSIs. Approx. 500 yds long & 250 yds wide. Acceptable temps
and viz in summer. Sunken motorboat, school bus and various furniture items. Training platforms in place.