We were uncertain as to the purpose of the shafts – but we hoped to soon find out.
Following in along the tunnel we negotiated a sloppy stream. The water was quite cold and a little smelly. It looks like there was once a narrow gague rail line that had run along the passage, the rails are clearly visible at the tunnel entrance. I cannot remember whether it was the Decew Formation that the tunnel cut along but I think it was – notice the smooth layer above – the rock is perfectly cleaved away from it thus leaving a ceiling that appeared to be cast in concrete (Though it is natural).
We were at this point totally perplexed as to the purpose of the shafts – the second one running parallel some 100 meters off to the side. There was quite a flow of water coming from the second tunnel but its mouth was blocked by a perforated wall – we hoped that this tunnel might have a connecting passage.