[1] Pedreira is a small lake that exists since late 20th century as an unavoidable casualty, despite being the work of man.

The site was a quarry used to extract granite to the build the breakwaters of the port of Póvoa de Varzim in the 1930s.

Pedreira is L-shaped and all of the lake is surrounded by granitic cliffs, excepting by the west and in the southeastern tip.

In common with its creation, the aquatic fauna which lives in the lake, is the work of man and casualty, such as aquarium dumping.

The plan includes its use for recreational boating, basin cleaning and cliff excavation in a staircase-shape, which according to the city hall, it will reduce hazards.