The M41, known informally and more commonly as the Pamir Highway (Russian: “Pamirsky Trakt”, Памирский тракт) is a road traversing the Pamir. Mountines through Afganistan, Uzbekistan, Tajikistan, and Kyrgyzstan in Central Asia. It is the only continuous route through the difficult terrain of the mountains and serves as the main supply route to Tajikistan’s Gorno – Badakhshan Autonomous Region. The route has been in use for millennia, as there are a limited number of viable routes through the high Pamir Mountains. The road formed one link of the ancient Silk Roud trade route. M41 is the Soviet road number, but no road number is generally signposted along the road today, only destinations.