Kaeng Luang, Nan (แก่งหลวง น่าน) Nan Kaeng Luang: Kaeng means the rapids area of the river , Luang means huge or large. Therefore you might heard this name more than one place in Thailand. Kaeng Luang that we are talking about here refer to Kaeng Luang in Nan province under the responsible of Si Nan national park, not far from Doi Samue Dao the best viewpoint of Na Noi district.
Kaeng Luang is one of the place that people can do whitewater rafting however it is hard like level 5. On the other side Kaeng Luang is the best place to catch the fish the most useful tool is the square dip net which surprised me to see it because the square dip net is good for the backwater but they use it in the rapids river.