Early Homo erectus lived at high altitudes and produced both Oldowan and Acheulean tools - Mussi, Margherita; Skinner, Matthew M.; Melis, Rita T.; Panera Gallego, Joaquín; Rubio Jara, Susana; Davies, Thomas W.; Geraads, Denis; Bocherens, Hervé; Briatico, Giuseppe; Le Cabec, Adeline; Hublin, Jean-Jacques; Gidna, Agness; et al. (2023)