Author of the book: Juan Mañe y Flaquer. Numbering of the engraving in the book: nº 4. Autographed. "The Biscayans [...] accepted battle in Pandura, which was what it was called at that time [...]. According to tradition, so much blood was shed that the stones in this valley were stained red, and as a result of this it was then called Arrigorriaga..."