Runoff Tunnels

The runoff tunnels beneath the Crystalline Highway once kept the roadway free of obstructions during the rare bout of ionic acid rain. With the near-destruction of Cybertron, however, the runoff tunnels are constantly filled with corrosive liquid, as well as dangerous shards of the once-bright thoroughfare. Only the foolhardy venture down here -- if the atmosphere doesn't dissolve your armor, the lurking allicons left over from the Quintesson invasion are sure to set upon you the moment you let down your guard.