Nong Khaiball is a province of Thailand-icon.png Thailandball. It is located in Isan, or northeastern Thailandball, and is located on the border with Laos-icon.png Laosball. 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.

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