On August 1, 2023, the spring, which means "grey beard" in German, gushed.
Sivá Brada is a travertine hill near Spišské Podhradie. A mineral spring springs up at the top, forming a small lake, with other mineral springs springing up nearby. It is currently a national nature reserve. The mound is located in the Hornádská kotlina in the sedimentary layer of the Paleogene Basin of the Central Carpathians. Like other travertine hills in the Spišské Podhradie area, Sivá Brada is a consequence of the existence of transverse faults in the eastern continuation of the Vikart ridge and faults delimiting the Branisko Mountains. Along the faults, circulating CO2-rich groundwater emerges from the underlying Mesozoic limestones in the deeper parts of the basin. The travertines date from the Holocene to recent times. The currently active mound formed several decades ago as a parasitic seep at the base of an older mound.