Sam Phan Bok is known as a tourist attraction and popularity of Ubon Ratchathani. The rocky rapids under the Mekong River during the flooding season, which is a result of force water erosion and became the shallow lake more than 3000 wells or 3000 Bok. The definition of Bok or shallow lake is a deep pond in the rocky rapids under the Mekong River. Bok is the language of Laos is often referred to, and will be apparent during the dry season. The rocks, it will emerge from the water and became the wonders of the natural in the middle Mekong River. There are beautiful and quaint, so the villager called Grand Canyon