Valtierra
Town and municipality in Navarre, Spain
From Wikipedia, the free encyclopedia
Valtierra (Basque: Balterra) is a town and municipality located in the province and autonomous community of Navarre, northern Spain.

In 918, Ordoño II of Asturias and Sancho I of Pamplona attacked the fortress of Valtierra and burned its mosque and surrounding territory but failed to take the town.
In 1110, the Battle of Valtierra was fought nearby.