Quebrada de las Conchas, Natural canyon in Salta Province, Argentina

Quebrada de las Conchas is a 75 km canyon with red rock formations in orange and purple shades layered throughout its walls. The route passes through narrow sections and wider stretches past striking rock formations known as the Amphitheater and Devil's Throat.

The canyon contains fossils of shells and fish from the Cretaceous period, indicating an ancient ocean once covered this area. These geological layers reveal how the region was shaped over millions of years before becoming the landscape we see today.

The name Quebrada de las Conchas refers to the fossil shells found in the gorge. Recent archaeological research found that the Inca trail ran just metres from today's Route 68, and the reserve is also an important bird conservation area in Argentina.

Route 68 connects Salta and Cafayate through the canyon with multiple pullouts at viewpoints and rock formations. The best way to explore is by car or guided tour during daylight to see the different formations in good light.

The Anfiteatro at the end of the Garganta del Diablo is known for its echo. The rock walls were once freshwater waterfalls that eroded the stone into their present shape. Recent research found the Inca trail ran just metres from today's Route 68.