The Butter Days Activity · Valdeavellano de Tera, El Valle y La Vega Cintora, Soria Image of Valdeavellano de Tera, not of the place itself. Each summer the village devotes a few days to artisan butter with workshops, tastings and the oral memory of the women who kept the hand-made process alive, churning the cream in skins and pans. Photo: Heidi Meudt (CC BY 4.0) What to see and do in Valdeavellano de Tera