We had known for some time, courtesy of Rupert Soskin, that the resident stone of the inner chamber at Bryn Celli Ddu is part of a petrified tree trunk.
And once we had our eye in it became apparent that other ‘chunks’ of petrified wood had been used in the construction of this chambered tomb.
At least two, and almost certainly more, of the ‘entrance’ or indeed ‘exit’ stones and the lintel of the passage itself readily conformed to the strange specification.
This was very exciting, for while we may have been able to extrapolate a workable symbolism behind the use of such material for the stone of the inner chamber, this symbolism was, perhaps, not so readily applicable to the surrounds of the passage-way…
And was also, possibly, an indication of a more utilitarian function for these stones.
The mind… began… to boggle.