CHIANG MAI, THAILAND - OCTOBER 20 : White water rafting on the rapids of river Maetang on OCTOBER 20, 2014 in Chiang Mai, Thailand. Maetang river is one of the most dangerous rivers of Thailand. Shutterstock Image - CHIANG MAI, THAILAND - OCTOBER 20 : White water rafting on the rapids of river Maetang on OCTOBER 20, 2014 in Chiang Mai, Thailand. Maetang river is one of the most dangerous rivers of Thailand. - ID: 253603327