本片是一部英国纪录片片，上映于2003-04-17，由导演，由主演。
剧情简介：Set against the back drop of awe inspiring geological beauty, a strange scientific adventure sets out to discover how a mineral clad cave network - the height of a 30 storey building and the length of six football fields - came to exist deep below the Guadalupe Mountains in North America.
But this journey soon unravels a multitude of inexplicable phenomena and obscure geological formations, leading to the discovery of extreme rock-eating microbes - a testimony from primordial Earth and a glimpse of life elsewhere in the Solar System.
外文名：BBC Horizon:The Secret Life of Caves
类型：纪录片
地区：英国
