Salajõgi Spring

Near Vedra village in the Salajõe landscape reserve, the little Salajõgi, the 'secret river', lives up to its name: in dry spells all of its water slips underground and travels about one and a half kilometres hidden in the limestone before springing up again. Its old bed is left as a shallow dry valley, some 600 metres long and 100 metres wide. After heavy rain or snowmelt, though, the underground channels cannot swallow everything, and the valley fills into a temporary karst lake that can spread all the way to the highway. A walking trail leads from the car park to the springs.