Preliminary results of the 2017 season in the Amazonian earthen structures known as geoglyphs - Diez Castillo, Agustín; Rampanelli, Ivandra; Gualberto Fernandes, Tarsicio Jose; De Sousa Mascarenhas, Fluvio; Figueiredo, Evandro Orfanó; Mardini Sobrinho, Jorge (Universitat, Departament de Prehistòria i Arqueologia, 2017)