Built in 1916 by the Russian soldiers following the Trebizond Campaign, the road from Of to Bayburt runs on Mt. Soğanlı climbing up to an elevation of above sea level. The route without guardrails includes 29 steep hairpin turns. While the start and end sections of the route are paved with asphalt, the center part is only gravel. It is difficult to travel particularly in wet and dark conditions or by fog and snow, and it is considered as one of the most dangerous roads of the world, even more dangerous than the Death Road in Bolivia.