A small miracle happened. I think it wasn't altitude sickness it was caffeine withdrawal! Irish coffee totally brought me back to life.   Today went around the city. Cusco is a beautiful little city filled with shops of indigenous craft makers.  Bought some art from a man named Julio and his wife. Spent a f great part of the day with them. Tomorrow their grandfather will take to the train station in Poroy from there a train to Aguas Calientes and the next morning to machu Picchu.