The Los Caracoles passes through the harsh terrain of the Andreas Mountains on the way between Chile and Argentina.

The harsh incline of the pass features a number of sharp hairpins, and with no safety barriers and snow forecast for most of the year, the Los Caracoles is definitely one of the more challenging roads on our list.

The tough terrain requires a lot of skill and patience to negotiate, but despite the challenging surroundings the pass has a strong safety record, and is well maintained with double-decker tourist buses travelling the route on a daily basis.