Bukbuka Lake is located on the left bank of the Tergi River by the village of Ketrisi. This lake had mistakenly been called Abano Lake. Being at the base of the mountains, this natural monument restlessly releases bubbles of carbon dioxide with a great deal of noise, creating an impression as if it were boiling. Because of this, it is a place of rare beauty. 2.5 million liters of water is produced by the spring every 24 hours.