A team of scientists with the International Ocean Discovery Program last week presented a paper about the awesome time they had last year drilling for core samples from a region of the Mid-Atlantic Ridge called the Lost City, a hydrothermal feature teeming with extremophiles.
Originally expecting only to drill at a depth of 200 meters below the seabed but with such little resistance they just said fuck it and went as far as they could before a weather window closed. They made it down 1,268 meters and scratched at the surface of the Mohorovičić discontinuity, the legendary Shangri-La of geology nerds, and the boundary between the crust and the mantle.