Via a piece in the Portland Tribune:
In the bowels are meeting room, training rooms and team locker rooms. The Wolverines have separate locker rooms for the freshmen and upperclassmen, a throwback to the Bo Schembechler era.
“Bo wanted the freshmen to be by themselves for a year so they could become a very tight group,” Ablauf says. “The idea was, that would benefit them by the time they’re seniors and leaders on the team. We got away from that when the renovation happened in 2010. When Coach Harbaugh came in, he re-established the separate locker rooms.