There is a difference of approximately 1079 meters points, permitting that allows a division of the park into two zones: a section that corresponds to the a great part of the parish of Lamas de Olo, that includes the elevated points along the Rio Olo watershed; and, a lower area represented by the parish of Ermelo, that includes Ribeira de Fervença and the Olo watershed, marked by the sudden drop associated with the Fisgas waterfall.