I don't remember the exact name of the bridge over the RÃo Sucio or Dirty River, but it is located on the way to LimÃ³n as one travels through Braulio Carrillo Park.
This is an incredible phenomena. Right where I took this shot two rivers converge, one with dirty water, the other with clean water. This is the point where both rivers meet, almost underneath the bridge.
RÃo Sucio or Dirty River. Focal length: 52 mm Aperture: F/8 Exposure Time: 1/160 sec. Hand-held, early morning sun.