Festival of a Carballeira de Zas Activity · Zas, Terra de Soneira, A Coruña Image of Zas, not of the place itself. Folk music festival organised since 1984 by the cultural association Castro-Meda on the second weekend of August in an oak wood that acts as a natural amphitheatre; with more than three decades of editions, it is declared a festival of tourist interest and gathers thousands of attendees each summer among the oaks. Photo: Javier Pais (CC BY 2.0) What to see and do in Zas