Workers Drilling in Romania Broke into a Cave Sealed for 5.5M Years Link: https://travelandtannins.com/workers-drilling-in-romania-broke-into-a-cave-sealed-for-5-5-million-years-and-found-an-entire-living-world-that-has-never-seen-the-sun/ Discussion: https://news.ycombinator.com/item?id=49171223