Khun Korn waterfall is the highest waterfall in Chiang Rai province, 70 meter high. It is only 25 km from town on the "Old Road" to Chiang Mai.
From the parking area up to the waterfall is a walk for around 1.5 km, It is not very easy but not very hard and it is a beautiful walk with high trees and huge bamboo.
If you want you can have a little swim under the waterfall.
Khoon Korn Waterfalls Forrest Park is also called Khoon Korn Botanical Garden. If you know what you are looking for then you can find Ironwood, red cedar, chinkapin, champaka, gamari, Indian rose chestnut, jute and Siamese sal. Plus banana trees and many different types of bamboo.