The Maeya waterfall is located in Doi Inthanon Mountain, one of the highest mountains in Thailand. The Doi Inthanon is part of a mountain range separating Burma from Thailand in the northern part of the country. ChaCha - See more at: http://www.chacha.com/question/is-the-maeya-waterfall-in-northern-or-southern-thailand#sthash.b4PTGFjP.dpuf