Located in southern Brazil in the city of Urrusanga is a sick keyhole with a shallow end that is awesome. It is free and about 11 feet deep with metal coping and smooth transitions. To get there get yourself a map and get to Urussanga and then find the coordinates on your map of the streets Rua Lucia Delfino da Rosa and the cross street of Rua Alnir dos S Pinheiro. Take a left of Delfino onto Alnir and follow it to the end and you'll find the bowl just past the gate. It's a good one.