This cave arboretum is located in the vicinity of Amphoe Chom Bung, 30 kilometers west of the provincial township area. The cave was originally called Tham Mutchalin; it is located in a mountain which is 191 meters high situated in the township area. In the year 1895, King Chulachomklao and Queen Si Phatcharin made a royal visit and they liked the beauty of this cave very much, thus, giving a new name to it, "Tham Chomphon". There are beautiful stalactites and stalagmites in the cave which also houses a medium sized Reclining Buddha. In front of the Comphon Cave lies an arboretum having various species of plants and trees. It is a suitable place for relaxing.