Valle Calchaquí is part of the Tentative list in order to qualify for inclusion in the World Heritage List.
Click here for a short description of the site, as delivered by the State Party
Els Slots The Netherlands - November 2008
A trip to the Valle Calchaquí is one of the many daytrips that can be undertaken from the city of Salta (Northwest Argentina). There are a lot of valleys to explore here. This one stretches out directly to the west of the provincial capital.
Most impressive part I found the Los Cardones National Park - a 'forest' of candelabra cactuses. Really great if you're from a lesser dry area and never seen anything like it before.
There are condors to be seen too. The route ends in the sleepy town of Cachi, which is good for lunch.
It's a nice outing, but I don't think this Tentative Site is remarkable enough to become a proper WHS. The accompanying information provided by Argentina is very vague too. Although it is suggested as a cultural site, much attention is drawn to the Valley's geology and natural beauty. It also repeats a lot of what is said about Quebrada de Huamahuaca: agricultural practices, Andean trade route, spread of the Inca state.