Shum-gora

Shum Gora is a massive kurgan situated in Peredolskaya Volost, near the bank of the Luga River, Batetsky District, Novgorod Oblast, northwestern Russia, about 60 km west of Novgorod.

The hill was formerly involved in local liturgical practice.

19th century sources record that three crosses standing on its top, but by the 20th century these had been removed. During the mid 19th century, there used to be processions, with pilgrims walking three times around the hill before ascending it to "listen to the noise" and leave small sacrifices in a pit at the top. People suffering from headache used to put sand from the pit in their ears.

Source: Wikipedia