The Limarinho cuts and lagoon, resulting from mining, are the most notable landscape expression of the ancient mining of Terva Valley. In Limarinho, the overwhelming scale of the open-pit mining is evident alongside the conducted extraction areas in the landscape, well attested by the cuts, the trenches and the remnants residual pyramids.
The open-pit excavation works followed a North-South direction and covered an area with over two square kilometres. This is also the area housing the largest identified and conserved vertical well, locally known as minóculo. The well has an estimated depth of around fifteen meters, with the inlets from the shoring being identifiable. Opposite the well is the end of a hall gallery where the presence of shore can also be seen alongside lamp niches.