Sure, this video has all the charm of your typical mid-century educational videos with a deep-throated narrator and plodding atmospheric music, but its subject matter is something you know very well. It’s about the jewel of WMATA, Metrorail, and specifically how it was built, which is pretty cool. Even if you don’t appreciate long wait times, crazy passengers and all other fun Metro benefits, you can definitely appreciate it as a feat of engineering. Check out from 1:45 on to see footage of how workers tunneled under the earth to make Metro possible. via