Seran Lake

Seran Lake (Danau Seran) is an artificial lake in Guntung Manggis, Landasan Ulin District, Banjarbaru City, South Kalimantan, Indonesia. Formed from a former diamond mining excavation that filled with rainwater, it is notable for its turquoise-blue water contrasting with surrounding earth cliffs. The lake has become a popular local recreation and photography destination near Syamsudin Noor Airport, offering scenic views and simple leisure facilities.

Visitors can expect a small turquoise-colored lake set within excavated earth cliffs and sparse vegetation in a former mining area. The site offers open views of the water, earthen embankments, and simple photo spots and seating areas around the shoreline. Visitors can walk along the edge, take photographs, rent small boats, and relax at local food stalls. The environment is open and exposed with limited shade.

Seran Lake occupies a former diamond mining excavation in the Banjarbaru-Cempaka area, a region historically known for diamond mining since the Banjar Sultanate and Dutch colonial period. After mining activity ceased, the pit filled naturally with rainwater and groundwater, forming the present lake which has since been utilized as a local recreation area.