Travelling along the Thai-Lao border from Loei to Nan we were passing Phu Soi Dao National Park and a bit further a waterfall from where you can make a short hike of 6 km thru the jungle of huge bamboo & pine trees. Be aware that the waterfall and walking trail is considered to be part of Phu Soi Dao National Park and you will need to pay entrance fee. For foreigners that means that you have to pay much more as that Thai family driving a BMW. Along this route you will also find some centuries old temples with beautiful murals. Like at the photo below. An amazing off the beaten track route to be traveling in Thailand!
