The holy spring of St. Sergius of Radonezh is located five hundred meters from the federal highway near the village of Debolovskoe, on the banks of the Sara River. The spring has been flowing here for six hundred years. According to legend, St. Sergius stopped here twice to rest with his disciples while returning to his homeland in Varnitsy. The holy abbot consecrated this spring with his prayer and presence.

In 2004, the spring was improved. Water from the well flows into a special chapel with a bathing area, where, according to believers, immersion on festive days brings special grace. Legends abound about miraculous healings at this spring. The restoration of the spring of St. Sergius of Radonezh became possible thanks to the help of church benefactors, entrepreneurs, and local parishioners.