We had a pretty hairy bus ride from Uyuni to Potosi as the road wasnt made and was full of holes it was really bumpy. Once we left our seats about half a foot! Once we made it in one piece to Potosi we went for a tour around the old mint which used to make all the currency for Bolivia but now doesnt make anything. Their coins are made in Chilie apart from 5bolivianos coin which is made in Canada and notes made in France!!