Festivities of la Cerollera Activity · La Cerollera, Bajo Aragón, Teruel Image of La Cerollera, not of the place itself. La Cerollera, at 842 meters above sea level in the Teruel Bajo Aragón, takes its name from the acerollo or wild service tree, which appears on its flag and coat of arms. According to the 2025 INE (National Statistics Institute) it has 77 inhabitants. Photo: Juan Emilio Prades Bel (CC BY-SA 4.0) What to see and do in La Cerollera