3 ms·
There's a nice PBS video about them with footage of the holes: https://www.youtube.com/watch?v=Pz1fccY3S84 https://www.youtube.com/watch?v=Pz1fccY3S84
by ThisIsMyAltFace 4y ago
There's a nice PBS video about them with footage of the holes: https://www.youtube.com/watch?v=Pz1fccY3S84 https://www.youtube.com/watch?v=Pz1fccY3S84