Falmouth Spring, just off Hwy 90 between
Madison and Live Oak, FL, is unique:
the springhead is a “Karst window”, a sinkhole where the limestone has collapsed into an underground river allowing it to vent to the surface;
the outflow does not join an aboveground river (the nearest aboveground river is the Suwanee, several miles away) but instead siphons into another sinkhole to rejoin the underground river.
The pool between the vent and siphon holes is elongated and is called The World’s Shortest River, only about the length of a football field.
Geologically intriguing as well as a wild and secluded place to swim, Falmouth is one of my favorite Florida springs.
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