A surge in obsidian exploitation more than 1.2 million years ago at Simbiro III (Melka Kunture, Upper Awash, Ethiopia) - Mussi, Margherita; Méndez Quintas, Eduardo; Barboni, Doris; Bocherens, Hervé; Bonnefille, Raymonde; Briatico, Giuseppe; Geraads, Denis; Melis, Rita T.; Panera Gallego, Joaquín; Pioli, Laura; Serodio Domínguez, Andrea; Rubio Jara, Susana (2023)