Fuente de Piedra Lagoon is a wetland located in the Málaga province of Spain. It is used by the greater flamingo for its annual reproduction cycle, constituting the largest colony on the Iberian Peninsula of this bird. The lagoon is fed by underwater springs that pass through mineral salt deposits, so the lagoon is saline - indeed salt was harvested until recently.
The lagoon covers an area of 13 square kilometres. It is elliptical in shape. Its major axis is 6.8 kilometres and the minor one is 2.5 kilometres. However it is very shallow; in a good year it is less than 1 metre deep at its deepest point.
Wikipedia https://en.wikipedia.org/wiki/Fuente_de_Piedra_Lagoon
Address (Unnamed Road), 29520, Spain
Coordinates 37°7'58.78" N -4°44'37.095" E