2.6 Million Years Ago
The beginning of the Pleistocene epoch otherwise known as the ice age. Massive continental glaciers advance and retreat causing sea-levels to fluctuate widely. Florida is undergoing further karstification and the Floridan Aquifer System repeatedly fills and drains with saltwater from the oceans and fresh water from rain. Many of our springs are formed during this time as sinkholes and as water levels in fluctuate, some begin to discharge water becoming springs.