From Humahuaca by car/van
This 237-km rubble road starts in Humahuaca (3,012 m.a.s.l.). Two must-see stops are the spectacular Hornocal mountain chain and Abra de Zenta (4,499 m.a.s.l.), the highest point of the tour.
Then, the road descends, crossing historic villages that still maintain their ancestral traditions: Santa Ana (a good option for a night-stay), Valle Colorado, Valle Grande and San Francisco, going through Calilegua National Park and finally arriving at Libertador General San Martín city (472 m.a.s.l.).