Trailhead welcoming committee and lawn mower. A small herd of llamas patrol the ruins, cropping grass on the terraces and posing for photos. Be aware that the Department of Agriculture inspectors will insist on disinfecting your shoes when you return to the U.S. after visiting Machu Picchu. It pays to have your shoes packed where you can get to them so the inspector can spray them and get rid of any (suspected) hoof-and-mouth contamination.