《大峡谷探险之河流告急》是由Greg,MacGillivray执导,罗伯特·雷德福主演的剧情片。该电影于2008年在美国上映。 大峡谷Grand Canyan位于美国亚利桑那州西北部科罗拉多河中游、科罗拉多高原的西南部,是地球上最为壮丽的景色之一,由深邃的山谷所夹峙,分成南壁与北壁两部分。南壁因交通方便,也有旅社等设施,而且在冬季雪期,仍能欣赏天然奇景,因而成为观光大峡谷的中心。 自冰河时代开始,直到今天,在无数世纪间,科罗拉多河不断地侵蚀大地,终致形成这一大峡谷,长度达347公里。该峡谷起于马布尔峡谷,终端为格兰德瓦什崖,全长446公里,是世界上最长的峡谷之一。峡谷顶宽6至28公里,最深处1800米。从谷顶到谷底需3至4小时。谷底两岸的宽者小于1公里,窄处仅120米。两侧的谷壁呈阶梯状。谷底水面不足1000米宽,夏季冰雪融水下注,水深增至18米。山石多为红色。从谷底至顶部沿壁露出从前寒武纪到新生代各期的系列岩系,水平层次清晰,岩层色调各异,并含有各地质时期代表性的生物化石,
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