Mining landscape of Ariño Nature · Ariño, Andorra-Sierra de Arcos, Teruel Image of Ariño, not of the place itself. Landscape resulting from mining activity in the municipal area of Ariño, where coal and lignite mining began in 1914 with the opening of the Santa María pit. From 1940 the activity was run by the Sociedad Anónima Minera Catalano-Aragonesa (SAMCA), and from the 1980s onward extraction switched to open-cast mining. Ariño came to hold Spain's second-largest lignite reserve. Photo: B25es (CC BY-SA 4.0) What to see and do in Ariño