Comment on Arnold et~al. ``Drought and the Collapse of the Tiwanaku Civilization: New Evidence from Lake Orurillo, Peru'' [Quat. Sci. Rev. 251 (2021): 106693]
This paper revives a fascinating debate: did a drought start before, during, or after the collapse of the Andean polity of Tiwanaku? Here we present an alternate age model that …
erik-j.-marsh