Simplified Geological Map of Serra da Estrela Natural Park, scale 1:75 000
The Simplified Geological Map of the Serra da Estrela Natural Park, on a scale of 1:75 000, was produced in 1999 by the Geological and Mining Institute and the Institute for Nature Conservation. This map also has a Geological and Geomorphological Guide to the Serra da Estrela Natural Park, with the main sites of geological and geomorphological interest.