I have been saying it for years now because of my own studies. The population estimates are way way under what the true population was. The population they claim would not have required almost total cultivation of central and south America. Just the amount of salt that was mined and processed blows their estimates out of the water. Man just does not exert effort without a need and demand. It was once all populated as densely as western Europe is now...
The LIDAR keyword had a lot more (Amazon rain forest locations for example) but I only posted the ones pertaining to Mayan sites. Considering the difficulty of even looking for the abandoned sites, and how recently the writing system was cracked, with the addition of LIDAR (and probably AI analysis of LIDAR and satellite data) it’s a good guess that the next twenty years will turn up more stuff than the past 150 years has.