YouTube channel “Jelle’s Marble Runs” took 100,000 marbles and ran them through a “marble run” which is kind of like a maze.
The sound is pretty remarkable as so many marbles make their way through the run. It’s been called “incredibly satisfying” to watch them all moving in unison.
One fact we found surprising: It took only around three hours to build the whole thing. We still don’t know how they got their hands on that many marbles though.