Welcome to Thailand's 'Little Switzerland', so called for its cool climate and mountain scenery. A visit here is like entering a different world: you leave the tropical heat of the plains, following the narrow switchback road up the mountain with its expansive views of the towns and fields below, until you reach the cloud belt where villagers are bundled up in winter jackets and speak languages imported from faraway places. The winter phenomenon of frost (occurring usually in January) adds to Doi Ang Khang's exoticism. Thais often make the pilgrimage here during the New Year's holiday period to shiver from cold for amusement. Doi Ang Khang (1300m) also borders Myanmar and offers the illusion of peeping over the border into that country's vast frontier.
Read more: http://www.lonelyplanet.com/thailand/chiang-mai-province/doi-ang-khang#ixzz3iabxpWNt