Khon Kaen and Udon Thani (PDF)

    Khon Kaen was established as a city over two hundred years ago during the reign of King Rama I, but the natural and historical evidences found in the area indicated that its history dates back much further. The ancient Khmer ruins, traces of human settlement in the prehistoric period, and the fossils of dinosaurs have proven the remarkable history and culture of Khon Kaen since millions of years ago.

- Khon Kaen
- Udon Thani
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