Valentí Masachs Alavedra (Manresa 1915-1980), first president of the Grup Autònom de Manresa de la ICHN (ICHN’s autonomous group of Manresa), doctor in geology and professor of the high school Lluís de Peguera in Manresa. The Museum of Geology of the Escola Universitària Politècnica de Manresa (Politechnics University of Catalonia, School of Manresa) and a street of the city have his name on honor.
[photo: IES Lluís de Peguera archive]
See also the article Pedres milionàries, in Catalan, by Jordi Badia.