Under the expert guidance of professional dowsers Kateřina Mastroianni, Zdeněk Hrnčíř and Zdeněk Tomáš, we will venture through the urban landscape to attempt to locate underground water sources and intersecting springs. The event has no time or capacity limits, is free of charge, and offers a first-hand experience with a practical demonstration of dowsing in the city. Together, we will try to find that which we need but cannot see. Letná Plain is a site with a rich history and an essential open space for civil society gatherings. However, in the midst of a crowd on the plain, one’s mouth can easily go dry…