The hill where the fort is located is between the river Búbal or Buble (that defends it from the south) and the river of Porto do Rei (slightly narrower, which defends from the north), at a height of about 630 metres above sea level. It is a large fort located between the par-ishes of Videferre (Oímbra) and Medeiros (Monterrei) which has extraordinary natural de-fences. The major axis (SW-NE), has a maximum length of 178 meters and is clearly in a plateau shape, presenting total dimensions of approximately 1,7 hectares. The minor axis (SE-NW) reaches a maximum width of approximately 118 m.