Please don't give the HFT's ideas, they'll probably do it and cause a half dozen tsunamis in the process.
The most-likely outcome is a few happy geologists/geophysicists and a number of very-sad HFT underwriters.
https://en.wikipedia.org/wiki/Mohorovi%C4%8Di%C4%87_disconti...
US, sea, 183 m below the sea floor in 3,600 m of water: https://en.wikipedia.org/wiki/Project_Mohole
I long for the days when the US loved building infrastructure.