Los cangilones de Gualaca are about an hour and a half drive from our house in Las Lajas. It is a beautiful river with a part that forms a small canyon where you can jump into "the crack". Even our 6 year old was jumping off! The kids love this place!
http://www.panamaface.com/en/attractions/los-cangilones-de-gualaca/
http://www.panamaface.com/en/attractions/los-cangilones-de-gualaca/