Rock Biter

One of the four great D'ni Digging Machines, this one built for the broadening of the Rudenna Passage. At the time of the excavation of the Great Shaft, it was 3000 years old. Together with its companion digger, Burrower, Rock-Biter was responsible for finishing the excavations of the Shaft by smoothing out the walls and cutting the steps that would spiral around the edge.