Travel from Durban to Underberg. In Underberg transfer into a 4x4 vehicle to begin the Sani Pass. The Sani Pass is high altitude stuff. Go prepared for bad weather at any time and expect snowfalls as late as October. Snow has fallen on the pass in every month of the year, albeit not in the same year. Sani Pass is the mother of all South African mountain passes. Statistically and in every sense, it out distances, out climbs, and out performs all it's competitors with consummate ease to have become the most iconic gravel pass in SA.