Bukulja (Serbian Cyrillic: Букуља, pronounced [bǔkuʎa]) is a mountain near Aranđelovac in central Serbia.

This mountain is an extinct volcano, which has been proved by presence of granite rocks, which contains specific mineral composition.

The city’s fishermen’s organization oversees the wildlife in and around the lake, providing food and managing the fish population to keep it healthy and sustainable.

The area offers well-maintained paths and a paved road to the summit, where a hunter's hostel is located.

The source, situated 500 meters (1,600 feet) underground, is located in an exceptionally pure and protected area, shielded by layers of clay and granite from the Bukulja mountain.