sentences:  It was upgraded to a full district on 19 July 1991.Neighboring districts are (from the north clockwise) Phu Luang and Phu Kradueng of Loei Province, Phu Pha Man of Khon Kaen Province, Khon San of Chaiyaphum Province, and Lom Sak and Lom Kao of Phetchabun Province.The district's east side borders Phu Kradueng Mountain.