Sak Yan master, Kamthorn of Wat Nong Khaem, Sanpatong, Chiang Mai, Thailand. The Ajahn died in 2011, Sak Yan are the mystical tattoos popular in Thailand. Ajahn Kamthorn worked in the rare 'Lanna' tradition of northern Thailand. This uses Lanna script for the Akkhara or Pali lettering and differs from the more common Khmer derived traditions prevalent in most of the country.