Antas de Ulla hillforts Nature · Antas de Ulla, Ulloa, Lugo Image of Antas de Ulla, not of the place itself. The concello brings together seventeen documented castros, spread across parishes such as Amoexa, Olveda and Amarante, as well as numerous mámoas; the very name of Antas refers to those Neolithic megalithic monuments. Photo: Satna (CC BY-SA 4.0) What to see and do in Antas de Ulla