BISKUPICE, GM. KŁECKO, POW. GNIEŹNIEŃSKI
J. Dydyński (1893, 10) reported that in the village of Biskupice near Kłeck there is a huge stone with a human footprint. According to legend, it was supposed to be the stone of St. Adalbert, from which he preached. The stone has not been found.
Sources of information: Dydynski 1893, 10; Baruch 1907, 45; Dydynski 2012; field queries