Fiestas de Santa Marina y la basabisita en Otxandio Activity · Otxandio, Arratia-Nerbioi, Bizkaia Otxandio celebrates its patroness Santa Marina, and on the third Sunday of September holds the 'basabisita', a traditional walk marking the boundaries of the communal woodlands. 18 de julio (Santa Marina); tercer domingo de septiembre (basabisita) Photo: Mikel1983 (CC BY-SA 4.0) What to see and do in Otxandio