Phu Tok is a renowned viewpoint famous for its sea of fog, attracting many travelers visiting Chiang Khan. This high mountain, located along the Mekong River, features a telecommunications station at its summit. It offers breathtaking panoramic views of Chiang Khan district and the surrounding Mekong River. Phu Tok is situated on the same road as Kaeng Khut Khu, approximately 3 kilometers from Chiang Khan town. Anyone visiting Chiang Khan should not miss the opportunity to witness the mesmerizing sea of fog in the morning here. Additionally, Phu Tok provides a clear view of the beauty of the Mekong River, the town of Sannakkham, and Kaeng Khut Khu. The visibility of the sea of fog may vary or may not appear at all, depending on the weather conditions each day.