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Topic: Drilling Deep: How Far Have We Gone Under Earth's Crust? (Read 51 times) previous topic - next topic

Drilling Deep: How Far Have We Gone Under Earth's Crust?

Drilling Deep: How Far Have We Gone Under Earth's Crust?

[html]Numerous operations have set out to dig miles deep into the Earth's crust. None of them have penetrated below the outer crust, leaving many mysteries hidden within the mantle and deeper layers of our planet.[/html]

Source: Drilling Deep: How Far Have We Gone Under Earth's Crust? (http://ht**://www.discovermagazine.c**/planet-earth/drilling-deep-how-far-have-we-gone-under-earths-crust)