Nong Khaiball

 is a provinceball of Thailandball. It is located in Isan, or northeastern Thailandball, and is located on the border with. The Mekong river flows through the province and  has become a popular destination during the Buddhist Lent festival when mysterious balls of light, or Naga fireballs, rise from the river. It was formerly the northernmost province in Thailandball until Bueng Kanball was formed.