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所属栏目：地理中国
所属频道：CCTV-10科教
年份：2015
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简介：一句“大渡桥横铁索寒”的诗句让大渡河上的泸定桥闻名于世，然而，在泸定桥身上却存在诸多未解之谜。东侧的桥基建在砂石堆积的软基层上，当地铁矿贫乏，古人放弃充足的石材木材，却建起沉重的铁索桥，随着科考的深入，更多谜团一一开始浮现。收起
《地理中国》 20150614 孤岛生境（下）
《地理中国》 20150613 孤岛生境（上）
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