River that originates in Serra de São Mamede, in the municipality of Portalegre, passes through Arronches and Gaia and flows into the right bank of the Guadiana, in Elvas.

The Louções Hill belongs to the Natural Park of the Sâo Mamede Hill. It has pre-historic sites with cave paintings, such as the Gruta da Igreja dos Mouros (Cave of the Moors' Church).

A cave located in the Louções Hill, in the parish of Esperança, on the southern boundaries of the Natural Park of the São Mamede Hill. This cave has part of an important set of outdoors cave paintings but may not be visited.