The holy spring of Varvara is located about one and a half kilometers from the village of Kupan.
The history of the source is covered with legends. According to one version, several centuries ago, a fool lived in the village, who discovered an icon in the swamp, near which a spring was beating in the quagmire. In another version of the legend, the icon was found in a swamp by a deaf-mute young man, who, from the surprise of finding the image, began to speak. This fact surprised his fellow villagers so much that they followed him to the swamp, where the icon of St. Barbara lay, and spring water flowed out of the ground next to it.
According to the third version, a girl from the village of Kupan decided to enter a monastery, but her father opposed this. The angry father killed the girl with the help of improvised means, and after some time a spring was hammered at the place of her death, where the icon of St. Barbara was later found.
The revival of the spring began at the end of the 20th century: the spring was cleared and a new wooden chapel was installed over it, as well as a swimming pool and gazebo.
Every year on Barbarian Day, which is celebrated on December 17, a prayer service is held at the spring. It is believed that water is curative and especially helps people with eye diseases.
The spring is protected by the state as a natural monument.