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WIN 1 of 2 copies of OGOF FFYNNON DDU in our latest caption competition!
Featuring 176 pages of lavish photography, a history of this classic Welsh system's exploration and first hand accounts of that dramatic rescue - from both sides of the stretcher!
Pretty sure it is Hull Pot - but by heck that's dry!
Here's a recent picture of the same spot shot from the surface, in more normal water conditions. The very different angle makes it look a bit different but if you look closely some features are the same on both images. The dry waterfall is obvious to the left of the cave entrance (as seen in the previous but one monochrome image).