Overview:Experts suspect a lost pyramid in China could be a secret military base.
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First Air Date: Feb 10, 2015Last Air date: Mar 16, 2023Season: 12 SeasonEpisode: 131 EpisodeRuntime: 44:14 minutesQuality: HDIMDb: 4.556 / 10 by 18 usersPopularity: 3.1062Language: en
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