3 Blue Hole interior view

When the aquifer level drops below 676 feet, the springs stop flowing and the Blue Hole is dry. Photo by Warren Lieberman.

When the aquifer level drops below 676 feet, the springs stop flowing and the Blue Hole is dry. Photo by Warren Lieberman.

When the aquifer level drops below 676 feet, the springs stop flowing and the Blue Hole is dry. Photo by Warren Lieberman.