Tupiza in Bolivia is surrounded by fabulous rock formations and dry river beds. It’s a great place for trekking, cycling and riding.The route north to the Salar de Uyuni salt flat takes in old mining towns (with Butch and Sundance connections) and miles of roads above 4,000m past lakes of blue, black, green and red waters, lonely volcanoes, surreal rocks and hot springs that you daren’t come out of because the cold air outside.