本片是一部美国纪录片片，由导演，由主演。
剧情简介：In Iceland, a giant tunnel boring machine called 'Jaws' has chewed up nine miles of basalt to aid a hydroelectric project. See the rock cruncher at work as it burrows deep down.
外文名：Megastructures: Rock Eaters of Iceland
类型：纪录片
地区：美国
