Photos of Tiwanaku's Pajano monoliths, including the (a) Bearded monolith, (b) Ídolo Plano, and (c) Headless monolith. Photos by Arthur Posnansky, John Janusek, and Carlos Ponce Sanginés, respectively.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.