The Sai Yok Noi National Park is located 2 km away from Namtok, city on the Death Railway (line railway of death). People mainly come here for its waterfall where you can swim. For the rest, it has not a lot of interest even if there are some caves to visit if you are ready to walk several kilometers to reach them. This is the train ride on the famous line to get there that makes the visit a lot more interesting.