Update: 4610-foot explored cavern under McIntyre Spring.
Blue Spring between Quitman and Valdosta has been known since the settling of Brooks County, when it was used as a reference point in building roads starting in 1859. Here’s an early 20th century report, with a much later picture postcard (probably not the same building) and location map.
A Preliminary Report on the Underground Waters of Georgia, by S. W. McCallie, State Geologist, Continue reading









