Festivities of las Peñas de Riglos Activity · Las Peñas de Riglos, Hoya de Huesca, Huesca Image of Las Peñas de Riglos, not of the place itself. The festivities of Las Peñas de Riglos are celebrated on the last weekend of August, although each settlement in the municipality keeps its own patronal festivity: Riglos honors the Virgen del Mallo (1 June) and San Sebastián (20 January), while Rasal, Triste and Ena celebrate the Virgen de Agosto (15 August), beneath the emblematic conglomerate walls of the Mallos. Photo: Wikipedia / Wikimedia Commons (CC BY-SA) What to see and do in Las Peñas de Riglos