Llygad Llwchwr system predictions

Background
In August 2010, a UK Caving forum thread on the subject of cave dowsing was resurrected and became quite lengthy.

John Wilcock, an advocate and practitioner of cave dowsing offered his dowsing results of the Black Mountain Llygad Llwchwr system for viewing. I (Rhys Williams) decided to create my own prediction without dowsing. This prediction was created by studying the geological map, taking into consideration dye-tests and putting down on paper my own feel for the area and its caves having been an active caver, digger and explorer on the mountain for a number of years. I created my prediction without seeing John's results. These predictions were created and published here on 25/8/2010. Rhys Williams

Key
Predicted cave watercourses shown with a bold blue line.

Known cave sites:

Underlying map images produced from the Ordnance Survey Get-a-map service. Images reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.
 * 1) Llygad Llwchwr
 * 2) Heaven's Door/Drws Nef
 * 3) Pal y Cwrt
 * 4) Ogof Uwch y Ffordd
 * 5) Pwll Cwm Sych
 * 6) Ogof Dan yr Odyn
 * 7) Ogof y Nant
 * 8) Ogof Gwynt yr Eira
 * 9) Ogof Pasg/Ogof Foel Fawr



Above: Non-dowsing prediction from Rhys Williams 25/8/2010.

Dowsing predictions - for comparison


Above: John Wilcock's dowsing trace provided on 23/8/2010.



Above: A dowse trace recorded in one long walk (uploaded by Martin Laverty on 25/8/2010. He stated that he was not the dowser, but that the participants are known).