The TBT dates back to the 16th Century when it was the sole means of transportation for rulers, pilgrims, monks, traders and legendary trail runners known as "garps", who delivered political messages to the dzongs (fortresses) throughout the country. At its height, the TBT had significant socio-economic, political and spiritual meaning, bonding communities into a nation. Stretching 403km between the towns of Haa in the far
