17 Nov 2010 From: Alan Bowring Twyn Llech Thanks Myrddyn, nice piece of work! I've looked at the very maps that you cite and see what you are getting at. As another of my correspondents has pointed out, one could venture as far as offering up 'Twyn Llech y Lladron' as a full name, but either way this must be an improvement on 'Black Mountain'- certainly less confusing except if it is adopted we'll perhaps find ourselves referring to 'Twyn Llech - the peak formerly known as Black Mountain'!