A portion of the tunnel bore machine is visible at the front of the conveyor system. In the distance, you can view a hydraulic arm that extends from the tunnel bore machine and pushes up against the side of the tunnel wall. This helps stabilize the bore machine and allows it to apply force to the front face of the tunnel to chip away rock. A crew member in the foreground is performing maintenance on the machines. The photo shows just how little space there is inside the tunnel.