Filmed during Charles Rider Noble's visit to Bulgaria in 1903. When they visited the Monastery in Rylo, they filmed a few films there including this and "Refugees at Rylo Monastery". The feast was for St. John of Rila, who was the first Bulgarian hermit and was revered as a saint while he was still alive. He lived from 876 to about 946. He is the patron saint of the Bulgarians and one of the most important saints in the Bulgarian Orthodox Church.