The Zas Flax Museum Monument · Zas, Terra de Soneira, A Coruña Image of Zas, not of the place itself. A centre devoted to the growing and the processing of flax, which was for centuries the textile livelihood of the houses of the valley of Soneira. It shows the complete process, from retting to weaving. Photo: Lameiro (CC BY-SA 4.0) What to see and do in Zas