• Canal Cave - Nidderdale

    Some interesting exploration techniques.

    'The next thing was to purchase a generator and pump. The plan being to test pumping out the flooded bedding in Lofthouse pot and fill HUTWP. The latter in a vain hope of creating water pressure to open up the choked bedding'.

    Click here for some excellent before and after shots

Welsh Wezzit

Graigwen

Graigwen

Well-known member
ChrisJC said:
Ogof Wyntog.

Chris.
Click to expand...

No.

I accept that Ogof Wyntog is further south than Ogof Draenen, although a very long way to the west (unless there is another Ogof Wyntog I don't know about). I refine the clue to within the catchment of the Afon Lwyd, including tributaries.
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RobinGriffiths

RobinGriffiths

Well-known member
Resurgence might be easier - so I'll have a pop at Cwmavon Reservoir Risings. I may as well have a go at the entrance as well, so maybe Fiddy's Farm Cave
 
Graigwen

Graigwen

Well-known member
RobinGriffiths said:
Right then....

Snatchwood Risings maybe?
Click to expand...
No (The main permanent rising at Snatchwood is in the middle of the river. The water comes up an enlarged bedding plane from the west of the river. The flood overflows that I am aware of also supply water from the west side of the river. ) Snatchwood bedding plane

The resurgence in the Wezzit photograph is on the east side of the river. Not much water comes out of it and sometimes the whole place is dry. Les Wookey told me about a visit he made in support of a diver, when they got there the whole place was dry and he was able to crawl through the normally sumped passage.
 
Graigwen

Graigwen

Well-known member
Come on folks, there is not much that side of the river between Blaenavon and Pontypool, look at the Registry map.
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Graigwen

Graigwen

Well-known member
RobinGriffiths said:
Nant Maelor Tunnel? A few things pop out there by the looks of it.
Click to expand...
Not Nant Maelor Tunnel, nor any of the other reservoir linked holes at stream level, nor the little caves in Nant Maelor Quarry, all of these are in the lower limestone (Castell Coch Limestone). But you are in the right woods, looking for a natural cave in the main limestone, very close.
 
Graigwen

Graigwen

Well-known member
RobinGriffiths said:
Ogof Lasgarn maybe? In same wood and in Gilwern oolite.
Click to expand...
No, but you have it surrounded. In the same woods (ignore different names for what is one stretch of woods). Not in the Gilwern Oolite but in the Lower Clydach Valley Subgroup, between the Gilwern Oolite and the Cwmyniscoy Mudstone. Less than 200m from your guess late last night. I could tell you, but I think you would like the satisfaction of solving it yourself.
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Graigwen

Graigwen

Well-known member
RobinGriffiths said:
Must be Ogof Pen Maelor then, the resurgence presumably being Nant Maelor Risings.

Click to expand...
Yes! Well done. Ogof Pen Maelor it is.

Don't be fooled by the name "Nant Maelor Risings" . These are not in Cwm Lasgarn down which the Nant Maelor flows, but in the main valley about 200m north of the confluence of Nant Maelor and Afon Lwyd.

The resurgence pool is Ogof Yspyty Pontypwl, on the Afon Lwyd near Pontnewynydd. It was not intended to be part of the Wezzit, just shown as a contrast to Ffynnon Ddu.

Your turn now.........

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RobinGriffiths

RobinGriffiths

Well-known member
This one should be straighforward..


MVIMG_20190825_173234.jpg
 
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