Sam Phan Bok is located in Ban Phong Pao, Moo 4, Lao Ngam sub-district, Pho Sai district, Ubon Ratchathani. This tourist attraction can only be visited during the drought season. This is because the canyon itself is under the Mekong River. When the rains come, the Mekong rises and covers this entire area.
The canyon resembles a mountain sprouting out into the Mekong. Spectacular views can be seen here of both the canyon and the river. It is believed that this natural phenomena is caused by the rushing water, acting like a drill, eroding the canyon over thousands of years. Here you will find over 3000 holes, big and small scattered all over the place. Some holes look like familiar shapes, animals, etc. There is even a hole that looks like Mickey Mouse (or Deadmau5 if you prefer). The Esarn and Laotian word for ‘hole’ is ‘bok’, thus the translated name is Three (sam) Thousand (phan) Holes (bok).