 Geographically, Suwannee County is situated on a limestone bed riddled with underground freshwater streams, which surface in dozens of beautiful springs.This phenomenon of "Karst topography" gives the area a local supply of renewable fresh water and abundant sources of fishing.The county is known as a world-class cave diving site for SCUBA enthusiasts, and underwater cave explorer Sheck Exley chose to live here in order to have close access to many of the springs.