Mareco is a "Inverneira" on the left (west) bank of the Laboreiro River and is located on a hillside at 740m altitude. It currently has houses used for tourism. The parish of Castro Laboreiro has more than 40 places, distributed by "Brandas" and "Inverneiras" - which are the highest or lowest places, where the people are protected from the intense cold of the harsh winters or the heat brought by the summer homeless.

The "brandas", in the highest places, are more pleasant and productive in the heat season, serving the animals also better opportunities for food - it is thus a kind of common summer house for the population and cattle of the parish and visitors from outside . Here the main places are: Vila, Várzea Travessa, Picotim, Vido, Portelinha, Coriscadas, Falagueiras, Queima-delo, Outeiro, Adofreire, Antões, Rodeiro, Portela, Formarigo, Teso, Campelo, Curral do Gonçalo, Eiras, Padresouro, Seara and Ports.

The "Inverneiras", in the lower areas, serve as a refuge from the cold and are located in the valleys of the parish. Your places: Beak, Cailheira, Curveira, Bago de Cima and Bago de Baixo, Clams, Laceiras, Ramisqueira, João Alvo, Barreiro, Assureira, Rotten, Alagoa, Dorna, Entalada, Bridges, Mareco, Ribeiro de Cima and Ribeiro de Baixo .