I packed up my things once again and was off fairly early for a visit to the Sacred Valley of the Incas, and the very same valley that has been carved over the millennia by the raging Urubamba River. The Urubamba is one of Peru’s most famous whitewater rafting rivers … but at this time of year (the wet season) the water is a rich coffee brown, loaded with silt, and the river’s volume is so high that it is virtually un-runnable by even rafts!