There's a section of Mexico highway 40 between Sinaloa and Durango in Mexico that's called "El Espinazo del Diablo" (The Spine of the Devil). It's a well known road to Mexican bikers. I didn't learn it's name until later, us having made a snap decision to ride a different return route and not having time to research. It's a very technical road and not for beginners. The "curvas peligroso" were sharp and coupled with the traffic makes it all the more dangerous. Rounding a corner and coming face to face with a semi, with no barriers between the road and a steep cliff, makes for an exciting challenge of preventing yourself from launching you and your ride into the void. I understand that there is a sign somewhere that names the section of road called "El Espinazo del Diablo" but I am sure I was concentrating much too hard to find it. That, or that I was jamming to some kicking Mexican dance club music that one of Magda Walker's nephews burned onto CD for me. That's some good motorcycling music. Turn it up loud and crank on the throttle. Pics across the street at alt.binaries.pictures.motorcycles.harley.