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Archive for October, 2012

Karst geography near Toronto – a likely spot for caves

To be successful as a cave hunter, that is a person who searches the countryside for caves, you must combine a variety of skills. In particular, by experience, the mind now tips me off to areas that are likely cave locations. A sound knowledge of sedimentary geology is helpful, understanding a little about physical geography will certainly add to your success, and most importantly, cave geography really tips the scales. In Ontario it helps to understand something about how glaciers influenced the landscape and of course the human interaction on top of that – in particular the tendencies of farmers over the last 150 years and their preference for plugging openings in their fields with coils of wire and other household debris.

Jeff and I went out searching this past weekend and we found a likely cave location on this area of land above a valley. Thus far researchers have visited and dye traced the most obvious spring out to a resurgence in the side of the nearby valley. We followed along and tried to intercept a possible tunnel entrance. It seems to be that in some cases tunnels get bigger deeper in. In this case we found a large soil pipe that had the sound of rushing water flowing beneath its clayish plug.

See the video here to learn more about how we search for caves in Ontario.

The above picture is a spot near where we found our promising soil pipes – it is a blind valley where a small stream disappears under ground.

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Waterfall in cave, originally uploaded by Mic2006.

I suppose on of the most gratifying things about cave exploration is the ‘buzz’ that you get, and everything in existence seems to be encompassed in the yellow circle of your headlamp. Outside your headlamp there is mystery – turn your head and the mystery reveals itself. Each turn, corner and passage feels like it’s own first time discovery – I guess its something like the gambler’s buzz, and once you leave the cave the buzz dies away and then I feel like i’m in this slump and the rest of the week is grey and gloomy.

First human in a place that has lain untouched for several thousand years – beat that! How can you? The greater the challenge, the more the buzz. If somebody has already gone before you and poured a concrete sidewalk where’s the wonder there? I believe caving can become an addiction, and having caved for 26 years now I am hooked just like a junkie. And oddly I’ve become a connisour of rare and unusual sights – a flowstone dam, cave pearls, speleothems and speleogens, crawling in tunnels that are washed by frigid streams, deep tannin stained pools in marble, dolostone, calcite and limestone – privy to a sleeping porcupine’s bedside, wondering if a bear lies just beyond. Where does the waterfall come from? What wondrous crystal is that? some would pay a fortune at a mineral show, I prefer the mineral exactly where it sits – a concept of eco-mineral exploration which is something quite closely allied to ethical cave exploration.

See my latest cave trip here to the incredible beauty of Marvin’s Cave and its mysterious tunnels through marble beneath a forest escarpment.

I’d have a problem topping this discovery – Mountain River Cave here.

For more on caving see my book, ‘Caving in Ontario; Exploring buried Karst’ – there is a link on the right side of the blog that will take you to Lulu where the book can be purchased.

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We visited a beautiful – pristine marble cave in Northern Ontario this week. The cave had initially been discovered in 1964 by Bob Burns and it was documented the following year in an archive that was managed by Derek Ford. The last visitors to this cave were Marcus Buck and Brad Wilson who spent the time to make a highly detailed map of the underground tunnels. This cave had been known by another name, but we had to change it to protect it’s location (on the advise of Brad and Marcus) The new cave name is after the former owner of the cave who has since passed away.

By its most simple understanding, the rock in the area dips quite steeply into the earth and there is a large swamp with a dry valley running parallel to it. We began our search for the cave based on Marcus’s memory of his visit many years before and so we made a few wrong turns before we finally found the cave. Whereas it is relatively easy to predict cave entrances in limestone – whose surface topography depicts what lies beneath quite accurately – here in the north, the contortions of marble and calcite veins are not so simply seen upon the surface. On the bright side, we did find a small sink point in the dry valley that might justify a second look.

See the video of Marvin’s Cave here.

When we first stumbled across Marvin’s Cave we actually came upon the point where the upper cave took water directly from the swamp, broke onto the surface for a short distance and then dropped down through a series of crevices into the lower system.

Marvin’s Cave is typified by a number of small cataracts that move its stream beneath the edge of a small escarpment in the forest. JC and I made a chilly October exploration up its stream that was still darting with minnows in mid-October. The main features in this cave are its two bowed out stream passages through incredibly banded marble. There are several sizeable rooms within the system, heavily littered with breakdown.

For more information on caving in Ontario, buy my book, “Caving in Ontario; Exploring buried Karst”. There is a link on the side of this page that connects to “Lulu” where the book can be purchased.

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IMGP4157, originally uploaded by Mic2006.

At the top end of a precipitous limestone valley near Toronto JC and I had found this pipe that ran up into a concrete barrier. That day we had been looking for caves on a tip from andrew. I believe we may have found what he had described (more on that in another post), but more to the point of this picture, we found this curious rusty pipe. well it was hard to ignore the mole in me and I soon found myself crawling up it – wondering where it went.

See video here that shows a little of that day and the crawl up the pipe and what I found at the end.

I suppose there is still room for urban exploration out in the countryside, and sweeter yet is something that is old and decaying in a forgotten valley.

Stay tuned as this coming weekend JC and I are again heading northwards for some serious Ontario cave exploration. We have several leads, in particular pushing Milo Cave and hopefully opening the extension of the tunnel that leads on beneath a granite hillside. Of course the semi – albino crayfish are encouraging.

see Milo cave here

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