Welcome to getting my ass kicked. Oh, hiking at 8,000 feet took getting used to, and I was on easy trails. I train at sea level! Where is a blood doping station when I need one? I should have asked Lance Armstrong when I passed him on a trail. Come on erythropoiesis. Below are images from Mesa Verde National Park. The cliff dwellings and pit houses were fascinating. It’s difficult to imagine that the homes were constructed only about 1,000 years ago.