Glacier National Park, Montana, USA.
Atacama, Chile. A road through one of the many salt flats in Atacama. In fact we arrived at this particular location by following instructions from a confused GPS and getting lost as a result. Luckily a Chilean patrol vehicle came to the rescue in this sparsely traveled area and we got out of trouble despite losing roughly 2 or 3 hours of travel. Always carry a printed map as backup!