Punar Kaya refers to an ancient site in Bulgaria, known as the Punar Kaya Tomb. The site is visited by many people on May 6 - St. George's day (Hıdrellez in Turkish).

The tomb is an archaeological site located in the Rhodope Mountains, close to the village of Stareyshino, Bulgaria. The site is notable for its tomb and the water that springs from its floor, which is surrounded by local legends and traditions.

The water at Punar Kaya is believed to have healing properties. According to local beliefs, it can help with conditions such as deafness, stuttering in children, and infertility in women. As part of the rituals associated with the site, visitors often leave clothing on trees around the tomb, following the belief that by leaving their garments behind, they are also leaving their illnesses.

The site features two main chambers: one where the healing water flows, and another that is thought to have been used for burial. The water is collected in two carved pools — one rectangular and one circular — connected by a channel that directs the water out of the tomb.

The water is considered most potent before sunrise on Hadrilaz (also known as St. George's Day), leading some people to visit the site at this time in hopes of receiving a cure.