The Caversham Tunnel
The tunnel is a single-track rail tunnel drilled through sandstone and operational for 31 years.
The Caversham 865 meter Tunnel began construction on the 21 September 1871 at the Kaikorai Valley end, and after the cutting was complete, on the Caversham end on 13 March 1872. Breakthrough of the two parts was achieved on Thursday 26 September 1872, with almost perfect alignment. The tunnel construction was finished late February 1873.
The line was opened by the Hon. Julius Vogel (Premier) on Saturday, 13 December 1873, with an excursion from Dunedin to the Green Island terminus, next to the coal pits of Messrs Sampson and Brown. A luncheon was then held in a nearby field, with a speech and toasts by and for the Premier.¹