Grossglockner Hochalpenstrasse – High Alpine Road – Thirty-six hairpins climb to 2,500 m beneath Austria’s highest peak, with a view straight down the Pasterze glacier.
A switchback road to the UAE’s highest point, home to the world’s longest zipline at 160 km/h.
Famous hairpin mountain road plunging off the Huila plateau.
High Hindu Kush pass and Soviet-era tunnel linking Kabul to the north.
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