Op Luang National Park Op Luang National Park Op Luang National Park () is a national park in Chiang Mai Province, Thailand. It is home to a scenic river canyon, waterfalls, and caves. Op Luang National Park is about south of Chiang Mai in Chom Thong, Mae Chaem and Hot Districts. The park's area is . It is contiguous with Doi Inthanon National Park. Like Doi Inthanon Park, Op Luang is in the Thanon Thong Chai Range. Prehistoric paintings and other artefacts have been found in Op Luang National Park. The Doi Pha Chang area has a cliff painting of an elephant. Near Op
Highest unclimbed mountain any locale closer than India. The prohibition was further expanded in 2003 when mountaineering of any kind was disallowed entirely within Bhutan. Gangkhar Puensum will likely remain unclimbed so long as the government of Bhutan prohibits it. It is unclear which is the highest unclimbed non-prohibited mountain. While some recognize only peaks with of topographical prominence as individual summits, the International Climbing and Mountaineering Federation uses a as the cutoff for determining individual summits. Based on the International Climbing and Mountaineering Federation's criteria, Muchu Chhish ( with a prominence of ) in Pakistan is currently the world's tallest that has