I like taking pictures of these signs. It saves on caption time.			These walls were built 800 years a go using just mud and stone.
	Pine trees are used as support columns and I-beams on the inside.			What's truly amazing is that besides making walls from mud and stone, these Sinagua Indians managed to craft a rudimetary garden hose, a metal step ladder, and some metal folding chairs similar to those used in modern day high school assemblies.