Drillers accidentally hit a pocket of molten rock underneath a working geothermal energy field in Hawaii, a lucky break for geologists that could allow them to map the geological plumbing that created everything we know as land.
The unprecedented discovery could act as a "magma observatory," allowing scientists to test their theories about how processes transformed the molten rock below Earth's surface into the rocky crust that humans live on today.
I can imagine the drillers: "Whoops!" then the scientists: "Oh wait. Cool!"