The Tuhala Witch's Well, is famous in Estonia because it can "boil over" after heavy rains. The well is placed just over an underground river, when the volume of water exceeds what the underground river can handle, water comes out of the well. Riverbeds and pools in the area that are otherwise dry are then also filled.
Unfortunately I haven't been able to see the well "boil over" myself yet, but I hope that the opportunity will come.
Copyright Otto de Voogd 2007
Tip! Try the Google Custom Search Engine for Estonia.