Well of Our Lady of Sorrows

The well can be found in the forest by the red-marked road from Potštejn to Liščí doly. The well is under the patronage of the village of Záměl, whose youth cleans it every year on May 1st. There is a nice rumor about this well, which you can read on the above pages.
You can walk around the well, for example, on the route described at https://www.turistika.cz/trasy/litice-potstejn-pres-chlum.