The Gangas fair marks the first Monday in October the most unique day of Zalla and the main agricultural fair of Enkarterri. This edition will preserve the most entrenched traditions and the successful novelties introduced in recent years.

The maximum of the day of Gangas, as it is known in Zalla, is to gather in the center of the municipality the best of the crops and other field products of the baserritarras. It is a large open-air market that, it seems, dates back (although with another name) at the beginning of the 18th century.