I misunderstood what you wrote due to the 2 conditionals you had "previous... didn't". I re-read what you wrote and you're correctly saying that there were soph

I misunderstood what you wrote due to the 2 conditionals you had "previous... didn't". I re-read what you wrote and you're correctly saying that there were sophisticated urban dense settlements in the Amazon. From the paper: "Here we present lidar data of sites belonging to the Casarabe culture (around ad 500 to ad 1400)10,11,12,13 in the Llanos de Mojos savannah–forest mosaic, southwest Amazonia, revealing the presence of two remarkably large sites (147 ha and 315 ha) in a dense four-tiered settlement system. "