Mandrensko lake – It is located to the South of Burgas. Until 1934 it was salty lake but later its structure was changed and a dam was constructed here. Today it is not a salty lake. Four rivers get into the lake. Via Pontica – one of the largest bird migration ‘highways’ passes over the lake. On the side of the Mandrensko lake is located the Poda bird and sparrow watching zone.