They are the 462m-long Chain Hills Tunnel, opened in 1875, and the 865m-long Caversham Tunnel,
https://www.stuff.co.nz/otago/131824487/like-entering-narnia-decommissioned-railway-tunnels-set-to-see-the-light
Two decommissioned rail tunnels and one big plan equal a trail that could open up a cycle route from Dunedin all the way to Queenstown.
https://www.stuff.co.nz/otago/131824487/like-entering-narnia-decommissioned-railway-tunnels-set-to-see-the-light
'Like entering Narnia': Decommissioned railway tunnels set to see the light
www.stuff.co.nzTwo decommissioned rail tunnels and one big plan equal a trail that could open up a cycle route from Dunedin all the way to Queenstown.