Festivities of invierno de Estercuel (San Blas) Activity · Estercuel, Andorra-Sierra de Arcos, Teruel Image of Estercuel, not of the place itself. As in other villages of the comarca, Estercuel also lights the bonfire of San Blas, on 3 February, in addition to that of San Antón which gives its name to its distinctive Encamisada. Photo: jnerin (CC BY-SA 3.0) What to see and do in Estercuel