A few more pics...
1. heading to the hairpins
2. start of the hairpins
3. after the hairpins
4. Chile / Argentina border
I'd love to take a car through this but the traffic was very slow and with good reason. One mistake and the consequences could be fatal.
This road also climbs to 3400 meters so non-turbos would be a bit short on power.
In the last pic you'll see concrete bunkers protecting the road from rock/snow avalanches. Our bus almost side-swiped a container truck at one point.