Tambre River through Boimorto Nature · Boimorto, Arzúa, A Coruña Image of Boimorto, not of the place itself. The Tambre, which rises in the Sobrado lagoon, crosses Boimorto forming the Ponte Castro fishing preserve; its banks of alder and willow make up one of the busiest trout stretches in the interior of A Coruña. Photo: José Antonio Gil Martínez from Vigo, Spain (CC BY 2.0) What to see and do in Boimorto