Late afternoon autumn sunlight streams over the tops into Bealach na Ba, a historic pass through the mountains of the Applecross peninsula in Wester Ross in the Scottish Highlands. Through it, a single-track road twists up into the mountains with switchback turns and gradients that approach 20%. It boasts the greatest ascent of any road climb in the UK, rising from sea level to 626 metres (2,054 ft), and is the third highest road in Scotland.