探险秘诀图片画廊。背景，这张照片是即刻地可以识别作为大峡谷。

Gallery: Adventure photo Tips the background of this photo is instantly recognizable as the Grand Canyon.

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据文章所写，史密森协会出资赞助这次探险，并发现史前古器物，如果得到核实，关于大峡谷的历史有待于进一步考证。

According to the article, the expedition was financed by the Smithsonian Institute and discovered artifacts that would, if verified, stand conventional history on its ear.

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