Narrow high mountain dirt road with a total length of 45km, between the village of Yuracmarca and the Calipuy National Reservation, in Peru, going along a path hewn out of sheer rock, over a precipitous gorge and passes through 50 unlit tunnels, hand-cut through solid stone.
The road is extreme, with 50 one-lane tunnels. It crosses the infamous Cañón del Pato (Spanish: Duck Canyon), on the Rio Santa (Santa River) at the north end of the Callejón de Huaylas (Corridor of Huaylas) in north-central Peru. This road is very exciting and sometimes very exposed and unsecured driveway in innumerable twists and turns. The total route involves over 50 tunnels, most of which are one lane and rough cut through the mountainside. The road rises from 500m to over 2000m. The road gets narrower and narrower with a succession of one lane tunnels. The road continues up to Ruta 3N and becomes one of the most dangerous roads in the world.
The surface of the road is mostly asphalted. Heavy or prolonged rain can cause local flash floods that cover the road with water or wash out culverts or bridges. The road goes narrower every time, with a succession of one lane tunnels. These were handcut out of the mountain and some of them are very narrow, needing a steady hand on the wheel to negotiate. There are vertigo-inducing depths of up to 1000m. The harrowing road snakes along a path hewn out of sheer rock, over a precipitous gorge and passes through 50 unlit tunnels, hand-cut through solid stone. Falling rocks are a major concern.