Photo by @argonautphoto (Aaron Huey). Hiking the Salkantay Trail to Machu Picchu, Peru. The Salkantay Trail takes hikers through the Salkantay Pass reaching 4,600m (15,200 ft) at its highest point. You start the trek hiking through ice and snow and finish the hike down in the jungle! Shot #onassignment for @natgeotravel. For more adventure travel photos follow @argonautphoto.