Well, to fit with the current situation more than 50% of the presently exposed backstone length would need to be below ground, with such a deep foundation a fall would be highly unlikely. Also, if it were buried so deeply it is very difficult to see how it could have "fallen" into its current location propped against the front stone.
Projections we have seen put the original height at close to that of the front stone, indeed, Borlase thought the capstone was supported only at the front and back forming a "trilithon".
Yet another Trevethy mystery.
 Reply | with quote | Posted by Megalithics
12th May 2010ce
20:17 |
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Re: Trethevy Quoit (Sanctuary)