Petroglyph of Campo Redondo Monument · Valga, Caldas, Pontevedra Image of Valga, not of the place itself. A group of Bronze Age carvings also known as the petroglyph dos Penoucos and declared a Bien de Interés Cultural (Spain's highest level of heritage protection); it occupies a raised outcrop from which the whole Ulla floodplain can be seen. Photo: http://gl.wikipedia.org/w/index.php?title=User:Lameiro (Public domain) What to see and do in Valga