With a review of the academic and journalistic literature, this chapter aims to further explore the shift toward a sustainable tourism in the context of UNESCO Natural Parks and Geoparks. Furthermore, the authors point out the persistence of a contradiction, that is, the presence of mining activities in the surrounding of above-mentioned UNESCO areas. After briefly reconstructing the socio-economic history of the mountain area of Serra da Estrela, located in the region of Beira Interior, in Central Portugal, the authors focus on the tension between two aspects: 1) the Post-Fordist model, concerning the transition to tourism development related to creation of UNESCO Natural Park and Geopark and 2) the reinforcement of lithium mining production and discovery of new deposits as an energetic and economic strategy for Portugal. In particular, the latter issue has given rise to various groups and movements of protest on a local basis. The claims of these groups suggest a radical paradigm shift in the development plans and in the conception of heritage in an ecological sense.
Geochemistry of S-type granitic rocks from the reversely zoned Castelo Branco pluton (central Portugal)