Ancient Wiang Lor (city Phra Lo) is from Chun District of Route 1021 to Ban Huay Ngiu approximately 17 kilometers of the intersection to the ground to Ban Nam Chun for about 12 kms archaeologists assumed that the constant is a city in the period. Pho Khun Ngam Muang because it appears the old city wall remains in many deserted temple and Wat Phra That old town is Wat Si Ping. Los Vieng and near this river is also where support River flows into the reference area is called the "Sop Ing.

Information from: thai.tourismthailand.org.