Pictographs in the Southwest. Humans have been trying to make sense of the American West for many millennia. How many? No one knows for sure but the past tells us that civilizations which do not heed the warning signs of ecological sustainability collapse, and  sometimes not with a whimper.  Photo by Don Snow
Pictographs in the Southwest. Humans have been trying to make sense of the American West for many millennia. How many? No one knows for sure but the past tells us that civilizations which do not heed the warning signs of ecological sustainability collapse, and sometimes not with a whimper. Photo by Don Snow