Diving in Greftsprekka - Norway

francis

New member
On Saturday 26 of Jan - 08, Mark, Kenneth, Odin, Bjarne, Magnus and I set off on a trip to Greftsprekka, a 265m deep cave in northern Norway. The objective of the trip was to carry diving gear down to the sump so that Mark could do a dive to try and connect the cave to Greftkjelen, a cave that is very close and has a sump at about the same level.

We met up at the train station and packed our gear into the cars. It was about an hours drive to the cave, and as you can imagine, I was very eager to get going after the 19h train journey from Kongsberg. We stopped on the way to do some shopping and to have a look a Saltstraumen, the worlds strongest tidal current (40km/h). It wasn't flowing very strongly when we were there, but it was still very impressive!

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When we arrived at the "carpark" it had started to snow and there was a bit more snow than we had expected, but not enough to be problematic.

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The route to cave goes up a steep snowy slope. It's quite steep (I would guess about 30*) so you need to be careful in some places. One of the guys on the trip almost slid over the edge of a short drop after loosing his footing, but managed to grab hold of a small birch in the last minute  ::). You gain about 300 height meters going up, so you get very hot. I had a spare woolshirt with me to change into after the ascent, which proved to be very useful as I was totally soaked when we reached the entrance.

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When we got to the entrace we got our gear on and finished distributing the diving gear.

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The entrance is quite small, so because of the snow and wind in the area it was covered in snow, and had to be dug out.

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There are 8 pitches (I think) on the way down, and very little crawling. The local guys had pre rigged the cave for the expedition, so the progress was very fast :). The cave is quite clean to start with, but gets more and more muddy as you get deeper.

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When we got to the sump Mark started getting the diving gear ready with some help from Kenneth and me, while the others got out the cooking equipment and started making hot water so that we could get something to eat :)

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The water looked very nice and clear, but just after I had finished taking the pictures it got all churned up, and the visibility became very poor.

Mark reached a depth of 17m, but didn't find a connection to the other cave. I'm sure he can say more about the actual dive :)

The trip took a total of 10h from the entrance and back again. When we got out it had snowed about 30-40cm, so the slope we had come up became very slippery. It took a while to get back down to the cars, I for one was very tired, but we all got back down safely.

It was a good trip, and we all really enjoyed ourselves!

Francis  ;)

All pictures ? Francis Dougherty Paulin
 

Rob

Well-known member
Nice report, and good shots. Sounds like a real adventure!

The tiny beds in the limestone are incredible, look almost like sandstone! Especially here...
Greftsprekka-19.jpg
 
M

MSD

Guest
francis said:
graham said:
Rob said:
The tiny beds in the limestone are incredible, look almost like sandstone!

Is this a metamorphic limestone by any chance?

Yes, it's marble.

Francis

Well some of it is....the extent of marbling depends on how much the limestone has been folded and squeezed. Because this particular bed of limestine has been folded up like a concertina, it varies a lot. To make things even more complicated I noticed one or two places where you can see that the walls are not limestone at all, but some form of schist. The mud at the bottom illustrated this very clearly, since it had a very high content of tiny shiny crystals, I guess mica, which have presumably been eronded from the schist. This made visibility absolutely TERRIBLE because even a slight stirring up of the mud created enormous amounts of backscatter. My drysuit still looks like some kind of disco suit form the 70s if you shine a light on it in the dark because it still has a lot of these crystals stuck to the weave of the material.

Mark
 

Les W

Active member
francis said:
The objective of the trip was to carry diving gear down to the sump so that Mark could do a dive to try and connect the cave to Greftkjelen, a cave that is very close and has a sump at about the same level.

Did it connect?
 

Ian Adams

Well-known member
Fantastic pictures and great report. Really great to see a trip like this .... thanks for sharing it with us  (y)
 
M

MSD

Guest
Les W said:
francis said:
The objective of the trip was to carry diving gear down to the sump so that Mark could do a dive to try and connect the cave to Greftkjelen, a cave that is very close and has a sump at about the same level.

Did it connect?

No.... -17m in a tight rift. Full details and survey to appear in the CDG newsletter.

Mark
 

cap n chris

Well-known member
To begin with, on seeing the first picture, I thought they were in black and white!

Sounds like a pretty stunning adventure, to me; I particularly liked the photo already mentioned in despatches. Shame on me for altering it though.

[flash=200,200]http://www.smashmash.tv/showvideo.php?vd=27e0d178[/flash]
 

francis

New member
cap 'n chris said:
To begin with, on seeing the first picture, I thought they were in black and white!

Pictures 1 and 3 are B/W. I took them as colour photos but thought they looked nicer as B/W.

Francis :)
 

francis

New member
Rob said:
Nice report, and good shots. Sounds like a real adventure!

The tiny beds in the limestone are incredible, look almost like sandstone! Especially here...

anfieldman said:
Thanks for sharing that with us Francis. Very good shots.  (y)

Jackalpup said:
Fantastic pictures and great report. Really great to see a trip like this .... thanks for sharing it with us  (y)

Thanks :)

Yes, it was very fun! I hope I will have a chance to go down the cave again, and have a trip down Greftkjelen too (AFIK a 20+h trip).

Francis
 

Misty

New member
I was particularly impressed that not only had you driven through treacherous conditions to get to the cave, you also had to dig down to find it;  but then did what seemed a demanding bit of caving to then go and dive it as well! Really lovely photos thanks for the report.x
 

Armchair

New member
A great, but not overblown, photo-report that sets an excellent standard. OK the scenery helps, but well done!
 

francis

New member
Kenneth has now finished editing some film footage from the trip. The summer footage is from a previous trip.

We are going back in a months time to go down Greftkjelen (the big hole in the beginning of the film) to do some exploratory work, and will be camping underground for two nights. I'll bring my camera and post some pics when I get back :).

The video can be downloaded here --> http://mjelle.no/files/greft_0002.wmv

Francis
 
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