C-173 is a high mountain track located in the Atacama region of Chile, running entirely over the 3.000m above the sea level.
The road is 104km long. It links El Jardin, on the C13 road and the Ruta 31 road. Do not travel this road in severe weather conditions. The surface on this gravel road is often loose, especially along the sides of the road. This track can get very muddy and slippery after rain making it challenging to get through. During and after a storm the road may be impassable, even with a four-wheel-drive vehicle. The highest point of the road is at 3.660m above the sea level.