Yeah, the next half of the paragraph I quoted mentions that. I'm not sure if the range of Terra Preta extends all the way to the site in question, but it may. E

Yeah, the next half of the paragraph I quoted mentions that. I'm not sure if the range of Terra Preta extends all the way to the site in question, but it may. Either way it seems like some amount of soil improvement was happening on all of the mounds I've read about in the region.