Someone wanders into the backrooms. They see all the usual backrooms BS. Then they find an Ethernet cable. They grab a random piece of desk and smash the everloving shit out of it and sit back to wait. Several hours later, a network technician comes in muttering angrily. They swear at the lost guy, saying something about the belfth floor printer, but the lost is able to follow them back out to a place that is at least somewhere.

This probably goes to a forgotten Netware server that's been walled in decades ago and is still happily humming away.