Nice one Langcliffe! I'm not familiar with the name Adrian Clarke; could you tell us a bit about him?
For anyone wanting a view of these stals taken in the opposite direction, see Jack Myers' photograph in Underground Adventure (1952, Gemmell & Myers) opposite page 38. (Sadly, these formations were damaged a very long time ago.) I think (from memory) there may also be an image of them in that article on the discovery of Hensler's Passages in one of the late 1930s BSA Caves & Caving journals.