 Dripstone (stalactites and stalagmites) has formed on the walls of Warm Mineral Springs down to about below the present level of the water, indicating that the water level in the sinkhole was at least low long enough for the dripstone to form.Although there are many small freshwater springs in the walls of the sinkhole, the primary source is a vent below the surface of the water which discharges an estimated a day of warm [] mineralized water.The water has a high content of dissolved chloride (1,600 to 1,700 milligrams per liter [mg/l]) and hydrogen sulfide (9,200 to 9,600 mg/l), and essentially no dissolved oxygen.