Namtok Si Dit is a large single-tiered waterfall, where water flows throughout the year. The area was once a stronghold of members of the Communist Party of Thailand, who went into hiding in the jungles of Phetchabun. Noteworthy is the nearby waterfall-powered rice mortar, used by CPT members whilst living in the forest.The waterfall is located at Mu 10 Ban Rom Pho-Rom Sai, TambonNong Mae Na, AmphoeKhaoKho, Phetchabun. To get there, take Highway 2196 to Km. 17 and turn right into Highway 2325 for 10 kilometers then turn right into the waterfall. Operating hours are 7.00 am-5.00 pm daily.