Cairnwell Pass
The Cairnwell Pass is a mountain pass on the A93 road between Glen Shee, Perthshire, and Braemar, Aberdeenshire, in the Scottish Highlands. The border between the two counties crosses the summit of the pass. With a summit altitude of, the Cairnwell Pass is the highest main road in the United Kingdom, and at the summit is the Glenshee Ski Centre, Scotland's largest and oldest ski centre. Historically, the pass was a drover's route from the Lowlands to the Highlands. The road is often blocked by snow in the winter, with snow gates at Braemar, at the summit, and at the Spittal of Glenshee.
A notorious double-hairpin bend known as the Devil's Elbow is south of the summit. The often-quoted gradient of 33 per cent is a myth: in reality it is no more than 1 in 6. The double bend, which was part of a 1749 military road, can be seen on Taylor & Skinner's 1776 Highlands map, it was bypassed in the 1960s. The old military road route can be still walked, or carefully cycled.