I just found the reference in an SWCC newssheet/E-Bulletin: 22nd January 2005
"CONSERVATION TAPE REMOVED FROM OFD Bernie Woodley
The taping, from four areas inside Top Entrance, on the way to Gnome Passage has been removed. These areas
were protected whilst investigations were undertaken to establish the veracity of a reported new type of
sedimentary formation, variously named, Schweinkarren, Tonkarren and Bouma Patterns.
I have discovered that these phenomena have been discussed at a previous BCRA cave science symposium and the
consensus was that they are caused by cavers. Where they do appear, they will only be found in heavily used
passages, created by the pounding of size ten wellies. There is, apparently, a fine example of these patterns to be
found on the main path in Wookey Chamber 3.
I would like to thank Peter Collings-Wells and Dr. A.R. Farrant for their invaluable help in sorting this out."