This study reveals the early results of diverse community archaeology activities taking place in a contemporary archaeological site, a cardboard hospital built in 1912 in the Vall Fosca (Catalan Pyrenees). This isolated valley, formerly used to breed cattle, had three hydroelectric power facilities erected in the twentieth century. In 2019, the Torre Capdella Town Council and the National Museum of Science and Technology of Catalonia initiated a project involving local communities. The main scope of this work is to comprehend the materiality of the working class and to provide new narratives about the people who built them and subsequently occupied part of the valley.