In the Bolivean Andes: narrow, big dropoffs, no guardrails. photos.
Personally, I think the Tioga Pass (from Yosemite down to Mono Lake), the Geiger Grade (from Virginia City down to Reno, Nevada), or the Stage Road (north of Pescadero, California) have certain similarities.
The Bolivian road reminded one of our commenters (and me too) of the great film by Henri-Georges Clouzot La Salaire de la peur [The Wages of Fear] (1953 -Amazon has the date wrong), which was redone by William Friedkin as Sorcerer (1977). The Friedkin version was treated unfavorably by the critics, but I’ve aways thought they were competely wrong. The original is a great film, and the remake is as good or even arguably better.
Hat tip to PJM.