Sam Phan Bok & Pha Taem — Mekong Grand CanyonCircuit.
Distance
330 km
Duration
2 days
Climb
800 m
Sam Phan Bok & Pha Taem — Mekong Grand Canyon Circuit.
A 2-day Isaan circuit from Ubon Ratchathani to Thailand's far eastern edge, where the Mun River meets the Mekong. Day one reaches the Pha Taem cliff and its 3,000-year-old rock paintings above the river; day two starts at dawn at Sam Phan Bok, the Grand Canyon of Siam — 3,000 water-carved potholes in a sandstone reef exposed only in the dry season. Flat, fast, nearly empty roads through the Isaan heartland.
Quick facts
SurfacePaved
Distance330 km
Days2
Total climb800 m
DifficultyEasy
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2 days, 2 moods.
A suggested split across 2 days with 5 waypoints to discover along the way.
Ubon RatchathaniStart · Start in Ubon Ratchathani, eastern Isaan's laid-back capital. The highway east to the Mekong is flat, fast and almost empty.
Pha Taem CliffPhoto Spot · Sandstone cliff high above the Mekong with prehistoric rock paintings along the cliff base — fish traps, giant catfish and handprints painted 3,000 years ago. This is the first place in Thailand to see the sunrise.
Khong ChiamOvernight · Overnight in Khong Chiam, Thailand's easternmost town, where the blue Mun River meets the brown Mekong — Maenam Song Si, the Two-Colour River. Riverside fish restaurants at sunset.
Sam Phan BokScenic Point · The Grand Canyon of Siam — 3,000 water-carved potholes in a Mekong sandstone reef. Exposed only in the dry season (Nov–May); arrive at dawn when the rock glows orange and the heat is still bearable.
Ubon RatchathaniEnd · Return to Ubon along the river road. Finish with kai yang and som tam — this is the Isaan grilled-chicken heartland.
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