Tunnel Bob ? really Robert Gruenenwald ? is one of those campus apparitions that new students occasionally hear about, but few see. His 6-foot 6-inch frame notwithstanding, Gruenenwald, 55, has always seemed comfortable below the geographical and social radar. More of a surprise than a threat, he has been making unauthorized patrols of the labyrinth of heating and cooling steam tunnels beneath campus since the 1970s.
Office of Strategic Communication