本期節目主要內容： 在重慶市彭水武陵山之中有一個神秘的苗寨，叫做羅家坨，傳聞這裡的苗族人擅長用毒，他們的用毒方法，會不會就是令人聞之色變的“蠱毒之術”呢？羅家坨所處的環境山林環繞，峰巒疊嶂，寨中人人都擅長使弩，百發百中。（《地理中國》 20170723 湘西秘境·苗寨探幽）
本期節目主要內容： 在武陵山脈大山深處，一條名叫“檳榔谷”的大峽谷在崇山峻嶺中蜿蜒穿行，它位於張家界市區西部的羅塔坪鄉。峽谷中，刀劈斧削的崖壁綿延數十千米。讓許多人感到疑惑的是，以檳榔谷為中心，半徑10多千米的區域之內，聚集着自然界許多神秘未解的現象。為探索武陵地區複雜的地理環境形成的奧秘，攝製組與地學專家一起，對武陵地區進行一次科學的考察。（《地理中國》 20170722 湘西秘境·奇窟迷霧）
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