Нo 12015
Провал
Провал Эстония, Северная

Tuhala Karst area, Witch’s well

One of the largest karst areas in Estonia is found here. The unique Witch’s well is one of the most interesting parts of this area. During spring floods (not every year, and for only a short period of time), the well erupts with underground river waters to create an unusually powerful karst stream that can pump out as much as 100 litres per hour.