The waterfall of Castriz Nature · Santa Comba, Xallas, A Coruña A waterfall in the parish of San Pedro de Xallas de Castriz, recorded in the Xunta's inventory of tourist resources. It is one of the few corners of abrupt relief in a concello of gentle undulations. Photo: Miguel Branco (CC BY-SA 4.0) What to see and do in Santa Comba