Bhutan was inhabited by people as early as 4,000 years back. There are archaeological evidences indicating settlements in Bhutan dating back to 2,000-1,500 BC. Bhutan in ancient times had many different names; it was known as Druk Yul or the Land of the Thunder Dragon in the 17th century. The outside world however called it Bhutan, derived from a Sanskrit word Bhu-Uttan meaning ‘High Land.’