Ancient history and settlement.
As early as 2000 BC, Bhutan was inhabited and although there are no existing roads from that time but weapons, tools, stones, and remains of large stone structures are evident of its history. It has been deciphered by the Historians that state of Lhomon or Monyul have existed between 500 BC to 600 AD. In ancient Bhutanese and Tibetan Chronicles, the names Lhomon Tsendenjong (Sandalwood Country), and Lhomon Khashi, or Southern Mon have been found. In Paro valley, the dzong was built in 1646. In 7th century AD Buddhism was first introduced in Bhutan.
On the southern slopes of the eastern Himalayas, Bhutan is situated. Landlocked between the autonomous region of Tibet to the north and the Indian states of Sikkim, West Bengal, Assam to west and south and to the east, the Indian state of Arunachal Pradesh. Bhutan lies between latitudes 26°N – 29°N, and longitudes 88°E – 93°E. Steep and high mountains are covered at the whole place crisscrossed by a stream of swift rivers forming deep valleys before draining into the Indian plains.