This park, located in Amphoe Nam Pat about 80 km. from town on Highways 1045, 1146 and 1047, features the largest teak tree in the world. It has a circumference of 9.87 m. and an age of about 1,500 years. Sadly, its top was broken off in a storm, cutting its height from 48.5 m. to 37 m., but it is still alive.