posted on Jun, 13 2016 @ 12:06 PM
a reply to: BO XIAN
Hi Bo Xian, No I haven't been there and am sorry about that but I did look up a little about it which is why I concur with Nickn3 about the theory of
water storage etc. I have copied an article from the Archaelogy site which you might find interesting. I expect you have been lucky enough to get
there. I am afraid my archaeological trips have focused on Egypt and the ME so have only managed to see a small part of the world.
"Water is scarce too, but after the rains, the Chaco river receives runoff water coming from the top of the surrounding cliffs. This is clearly a
difficult area for agrigultural production. However, between AD 800 and 1200, ancestral puebloan groups, the Chacoans, managed to create a complex
regional system of small villages and large centers, with irrigation systems and inter-connecting roads.
After AD 400, farming was well established in the Chaco region, especially after the cultivation of maize, beans and squash (the "three sisters")
became integrated with wild resources. The ancient inhabitants of Chaco Canyon adopted and developed a sophisticated method of irrigation collecting
and managing runoff water from the cliffs into dams, canals, and terraces. This practice--especially after AD 900--allowed for the expansion of small
villages and the creation of larger architectural complexes called great house sites."
I love seeing how innovative ancient man was.