The North Yungas Road (also Grove's Road, Coroico Road, Camino de las Yungas, "El Camino de la Muerte", "Death Road") is a 38 to 43 mile road (depending on source) leading from La Paz to Coroico, 35 miles (56 km) northeast of La Paz in the Yungas region of Bolivia. It is legendary for its extreme danger, one estimate is that nearly 100 travellers annually have died along the road -- the road moreover includes Christian crosses marking many of the spots where such vehicles have fallen. The road descends from approx. 12,000 ft (3600 m) to 1000 ft (330 m), transitioning quickly from cool altiplano terrain to rain forest as it winds through very steep hillsides and atop cliffs.
Only 38 to 43 miles, you say? No thanks! I'll crawl!
More pictures here.