Quebrada de las Conchas

About 1.5 hour south of Salta, the road winds through many different landscapes and rock formations, following the path of the Rio Colorado. Notable formations are  the Throat of the Devil, a natural Ampitheater, the Windows and more.  This area was formed about 90-100 million years ago around the time the Andes emerged. In  places you can see the white strips in the mountains which are layers of sea shells, showing the mountains were pushed up from the sea.  The scenery changes dramatically about every 5-10 miles and it goes unbelievably on and on for 2 solid hours.  Hard to pay attention to the road.