[defrost]

Equally hilarious, the Kalgoorlie Super Pit has a volume of 3.15 cubic kilometers.

That's a single, albeit large, gold mining pit and a fraction of the even greater volume excavated by humans looking for shiny stuff.

[Someone]

We mine about a cubic mile of oil every year (https://en.wikipedia.org/wiki/A_Cubic_Mile_of_Oil). That’s 4 km³.