The landscape of the region has three distinct relief units: the shallow and coastal plains, the valleys of the rivers Masma (Lorenzá) and Ouro (O Valadouro), and low-lying, undulating hills as the Sierra del Gistral (Serra do Xistral).
The region's terrain includes three primary relief features: the coastal plains, the river valleys of Masma (Lorenzá) and Ouro (O Valadouro), and low-lying hills such as the Sierra del Gistral (Serra do Xistral).