The first road in the country, from the early 19th century, was to Guzor, traversed by camels, and made into a modern road by the Soviets. The first bus line was started in 1930 and taxi service began in 1937. Automobiles are the main form of transportation in the country and in Dushanbe. One major road goes through the mountains from Khujand to Dushanbe through the Anzob Tunnel, constructed by an Iranian operator. A second major road goes east from Dushanbe to Khorog in the Gorno-Badakhshan Autonomous Province, then to Murghab, and then splits into roads towards China and Kyrgyzstan.