"The 'Grand Canyon of Thailand' is the nickname for Sam Phan Bok, a stunning rock formation located beneath the Mekong River in the Pho Sai district of Ubon Ratchathani. This natural wonder, shaped by the powerful currents of the river, features over 3,000 unique pools and holes that become visible during the dry season when the water recedes. The rock formations emerge from the river like islands, leading local residents to refer to it as the Mekong Grand Canyon. The breathtaking beauty of the rocks sculpted by the water offers a remarkable display of natural artistry. Some of the pools are large enough to swim in, while others vary in size and shape, resembling stars, ovals, Mickey Mouse, and even a poodle's head. This unusual beauty captivates and astounds visitors, making it a must-see destination."