Why is Bhutan called the 'Land of the Thunder Dragon' and what does its emblem symbolise?

Bhutan is called 'Drukyul' or 'Land of the Thunder Dragon' by its inhabitants. It is a small, landlocked Himalayan kingdom. The dragon on Bhutan's emblem symbolises 'the thunderous voice of the Buddha's teachings'. Cultural and religious ties between India and Bhutan are rooted in the shared heritage of Buddhism.