Brestak (in Bulgarian: ÃÂÃÂõÃÂÃÂðú) is a village in northern Bulgaria, Valchi Dol Municipality, Varna Province. Before 1934, its name was Karaagach (in Bulgarian: ÃÂðÃÂððóðÃÂ). In 1961, its population was 2,476, and in 1989 - 1,844.