One of the many highlights of South America is the 3-day/2-night or 4-day/3-night off-roading adventure from San Pedro de Atacama, Chile to Uyuni, Bolivia.  The days are filled with incredible panoramas of deserts, volcanoes, lagoons, salt flats, geysers, wild animals, fauna, and more…all between the altitude of 3,500 meters and 5,000 meters!  Tack on the high altitude, freezing temperatures, and heatless nights, and you get an amazing and memorable adventure that is not for the faint of heart. There is no shortage of tour companies in San Pedro selling excursions to Uyuni, but after reading numerous nightmare stories about drunk guides, shitty…