This is a simple natural spring producing a hydrocarbonic, slightly mineralised acidulous water containing calcium, magnesium and iron. This is the most northerly spring and rises naturally from the ground through a small tectonic fault running across the Pott Valley. Local people knew of it in much earlier times. There are eight more outlets stemming from this particular spring. They are located further south. The Pott Valley was probably named after an inhabitant of Úšovice called Hans Podd (also written Pott), who (probably) tried to mine gold here in around 1528. The remnants of small pits and heaps of earth on the hillsides above the valley are proof that mining once took place here.