Whether trekking through the remote jungles of Cambodia in search of a legendary ape-man or exploring the secrets of the world’s largest cave system right here in the United States, the EXPEDITION X team is taking viewers to the stranger side of the unknown. 　　S4 E1 - Terror in Appalachia（阿帕拉契恐怖山怪） 　　S4 E2 - The Van Meter Monster（凡米特怪物） 　　S4 E3 - Thailand's UFO Cult 　　S4 E4 - Graveyard... (展開全部)