Did this walk on April 10, 2023. Cold, rainy day. The narrow steep passageways were a bit challenging for me. But I endured and was proud of myself for completing this walk. Did, not however go very far into the tunnel, not having to want my shoes soaked with the stream that's inside. They wouldn't have dried in time for future halks. Beautiful scenery, like all of NZ, worth doing!

We really enjoyed this walk through the bush and then through the tunnel at the end. The tunnel is shut at the far end, so the return is back via the same path. There is lovely scenery to look at along the way and the walk is relatively easy, the path does get a bit narrower and steeper further along, but it is easy to navigate. The tunnel does have water in it, about ankle deep, and you will get wet feet so don't wear shoes that you don't want to get wet. Remember to bring a torch also as it is pitch black once you get away from the light from the entrance. You get to see the glow worms in here too so remember to switch your torch off for a look along the way. This walk is really close to the main centre of town, so it is very easy to walk to the start of the trail.

Hike is well marked. The last bit up the tunnel is ok just be aware of the rocks and some are loose. The tunnel had ankle deep water in some parts. Just take flip flops. Water wasn’t too cold either. Take a flashlight too. You get to see glow worms. Pretty neat hike. Took my partner and I about 1.5 hours to do.

If you are looking for an alternative to walking up toward Franz Josef glacier, this would be a good short hike. It runs uphill alongside a rushing river. The tunnels are only fun if you like hiking in a wet and dark place. There is nothing to actually see in the tunnels but it is interesting to read about the tunnels' history at the entrance.