Fair of la trufa negra del Moncayo Activity · Vera de Moncayo, Tarazona y el Moncayo, Zaragoza Image of Vera de Moncayo, not of the place itself. Vera de Moncayo holds in January a fair devoted to the black truffle, with a producers' market, demonstrations of gathering with a dog and tastings. The truffle plantations have spread across the dry lands at the foot of the Moncayo. Photo: José Antonio Gil Martínez from Vigo, Spain (CC BY 2.0) What to see and do in Vera de Moncayo