Ubon Ratchathani province
…Song Si" or the "Mun River alluvium" because the brown water from Mekong River mixes with the blue water of the Mun. It is about 84 km (52 mi) from Ubon Ratchathani city centre. The area in the Dângrêk Mountains where the borders of the three countries, Thailand, Laos, and Cambodia meet is promoted as the "Emerald…