Thanks! Archaeology works for stories I've missed as well.
The fact that they filled in and covered up the site tells me drastic social changes were occurring. I have no idea what kind.
5,000-year-old ceremonial temple discovered beneath sand dune in Peru
By Jennifer Nalewicki published 21 hours ago
https://www.livescience.com/archaeology/5000-year-old-ceremonial-temple-discovered-beneath-sand-dune-in-peru