Bhutan’s early history
The first immigrants apparently reached Bhutan 2000 B.C. Until today, however, there have not been any archeological investigations in Bhutan. It is therefore difficult to shed light on its history before the arrival of Buddhism.
Occasionally, while ploughing their fields, farmers found tools made out of stone, which they considered to be the weapons of gods or celestial deities which had fallen down on Earth during their wars. The only stone axe that has so far been investigated scientifically could be dated in the period from 2000 to 1500 B.C.