And if a stampede like this is surely dwarfed by bison stampedes from history, when the bison ruled the American plans with a force some 30,000,000 strong. A stampede back then was liable to flatten a mountain. This one, well, it could shatter some windows or dent up a car real good. Thankfully, that didn't happen.
Some of the commenters on Youtube see the stampede as a sign. By their logic, bison are more attuned to the earth than we are, and therefore more able to detect slight changes in the Yellowstone thermal system. Could these great big bison be running from the prospect of a supervolcanic eruption?
Not too likely, but it makes for an exciting story.
See the whole video below, and leave a comment if you have a notion why these bison are so riled up.