The Cherry Tree Festival Activity · El Hornillo, Arenas de San Pedro, Ávila Image of El Hornillo, not of the place itself. On the second weekend of August the village devotes its festivities to the cherry tree, one of the fruit trees which, along with the chestnut, thrives on the slopes of this district on the southern side of Gredos, at 748 metres of altitude. Photo: Asqueladd (CC BY-SA 3.0) What to see and do in El Hornillo