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They mark out the rim of a giant crater.
它们标志着一个巨大陨坑的边缘
Scientific instruments show the structure of the underlying rock has been deformed,
科学仪器显示 下面岩石的结构被扭曲了
revealing the boundaries of a colossal meteorite impact crater.
让人看到了一个巨大陨石撞击形成的坑的边缘
This amazing cavern is part of a bigger story,a much bigger story.
这个不可思议的沼坑背后是个更震惊的故事 非常让人震惊
Sixty-five million years ago, this was the site
6千5百万年前，就在这里
of one of the most catastrophic impacts in Earth's history.
发生了地球上最具毁灭性的撞击
What became known as the Chicxulub meteorite landed here
一个被称作是希克苏鲁伯的陨石掉到了这里
and that triggered the extinction of the dinosaurs.
导致了恐龙的灭绝
The meteorite was likely over nine miles across,
陨星直径15公里
enough to cause utter devastation across the whole planet.
足够导致整个星球的毁灭
It exploded with the force of one hundred million million tons of TNT.
它的爆炸力相当于一亿兆吨炸药爆炸
The blast sent a giant plume of vaporised rock out into space.
这次爆炸导致巨大的岩石蒸发进入外太空
A crater was punched half a mile into the Earth's crust.
地壳上产生了30公里深的陨坑
