It was the first time rock band Metallica had ever played live in Virginia Tech's Lane Stadium...and the crowd jumped so hard it registered as a small earthquake, according to the school's seismological observatory.
The concert took place Wednesday night in Blacksburg as part of their M72 World Tour. There were approximately 60,000 fans in attendance.
While it wasn't enough movement to measure on the Richter scale, it did show some seismic activity, the school said on Instagram.
It was a special moment for Virginia Tech fans, as the football team has been entering the field with "Enter Sandman" playing for 25 years in one of the most iconic entrance traditions in college sports.
The song won a fan contest before the start of the 2000 season, receiving more votes than "Welcome to the Jungle" by Guns N' Roses, and "Sirius" by the Alan Parsons Project.
It's not exactly clear when the synchronized jumping part came into play.
The next time "Enter Sandman" will play at Lane Stadium is Saturday, Sept. 6, when the Hokies host Vanderbilt for their home opener.
This story was originally published by the Scripps News Group in Richmond, Virginia.
