In Udon Thani Nong prajak municipal is a large swamp since the first set of Udon Thani. Originally called "Nong na salt." It is located west of the town, later renamed as "Nong prajak.
Municipalities in Udon Thani Prajak a large swamp. Since before the city of Udon Thani. Originally called the "salt marsh" is located west of downtown. Later renamed "Prajak
In the municipality of Udon Thani. Nong seemed to be the larger. Since the first set of Udon Thani. Originally called "Nong salt". Located on the west side of the city, later renamed as "Nong evident.