Glacial Cirques of the Moncayo Nature · Añón de Moncayo, Tarazona y el Moncayo, Zaragoza Glacial cirques of Quaternary origin in the Moncayo massif - las hoyas de San Miguel, San Gaudioso y Morca - with vegetation arranged in tiers: holm oak and Mediterranean scrub up to 900 metres, Pyrenean oak woodland between 900 and 1100, a residual beech wood struggling against stony soils between 1100 and 1650, and pine forests mixed with beech and oak up to 1800 metres, with black pine in the highest areas. The massif is a pilot site for the international GLORIA project for the study of alpine flora, with beech woods, oak woods and pine forests home to fauna unique in Europe. Photo: Miguel Ángel García. (CC BY 2.0) What to see and do in Añón de Moncayo