Nestled within the breathtaking Marble Mountains of Vietnam, Am Phu Cave, also called the Hell Cave, is a hidden gem that captivates visitors with its stunning stone formations and spiritual ambience. Am Phu Cave is a vivid representation of a Buddhist Hell, a place where sinners are punished and demons and devils devour your soul. The name, Am Phu, is derived from Vietnamese mythology, where it is believed to represent the underworld.