Castleguard of Ontario’s Underground Drainage Tunnels

What on earth is behind the tunnel blockage ?

IMG_6794, originally uploaded by Mic2006.

Well - not quite but the strange stoppage at the end of the tunnel kind of reminds me of pictures that I have seen of Castleguard Cave’s terminus beneath a glacier.

Here Jeff poses at the end of the tunnel - just a short walk and the odd amplification of the sound of roaring water, again that rather suferous stench and this bulging - apparently plastic cap that barred progress further along the tunnel. You might notice the pointed metal thing above Jeff’s shoulder - it is certainly a valve of some kind that would shut off the water flow from behind. I wondered if this tunnel might have had something to do with the construction of the nearby dam and lake Gibson. I was suspecting that maybe water was diverted from its present course down the side of the escarpment during the construction process via this passage.

The nearby power station was built in the 1930’s in part to boost up the processing of raw materials during the war. It has a head of 265 feet and sucks in over 8000 cu feet of water a second.

Anybody know anything about this place - I would be interested to learn of its purpose - also soon, my suspicions of the other tunnel and its possible cave-like appearance at its sink point.

Oh, BTW, if anyone has an interesting pictures of Ontario’s underground - be it caves or tunnels, and a paragraph or two explaining the picture, I would be happy to post it.