Khao Phra Wihan National Park became a national park on March 20, 1998. The park covers Kantaralak district in Si Sa Ket province and Nam Yoen in Ubol Ratchathani. The Mor-e-Daeng Cliff where the visitor centre is located, is a popular tourist destination. Ancient Khmer sclupture, Traw pond, Bat cave, Historic Flag Pole, and orchid nature trail to Khao Phra Viharn are the important attractions in this nature reserve.