At first, the picture in this unusually narrow and claustrophobic screenshot is blurred, but the frenetic background noise indicates that a new wagonload of prisoners has arrived.
Trains were often dispatched with wagonloads of ash to deposit over the side to shore up the line, and it has dropped considerably since the departure of the railway.
Seven days a week for five months, five hundred men and three hundred mules had toiled long hours, hauling in thousands of wagonloads of track bedding and surfacing material.
