DESCRIPTION
Hidden beneath the Mekong River lies a canyon known in Thailand as the “Grand Canyon of Siam”. Although they look nothing alike, the similar rock formation of the Grand Canyon and Sam Phan Bok is the reason why the catchphrase of Sam Phan Bok is “The Grand Canyon of Siam, Sam Phan Bok of Ubon”. However, this is not what makes Sam Phan Bok a natural wonder.
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