#3145: Piercing

XKCD comic, described below.
Transcript
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[One large panel, overlaid by two smaller ones in the corners, shows the Earth with an upward opening curve through its crust and mantle.]

Small panel 1: [Arrow pointing to a machine on tracks with an arm and a tube into the ground, with Cueball, Megan, and Ponytail nearby] Directional drilling rig

[Label on curve in the main panel]: Constant curvature borehole

Small panel 2: [Earth with a ring embedded onto it]

[Caption below the panel:]

Good news: Geologists have decided that Earth is finally old enough to get its first lithosphere piercing!


(Sourced from explainxkcd.com)

Title text:Some lava around the piercing site is normal, but keep an eye out for spreading earthquakes and eruptive activity that might indicate rifting.


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