You may have seen the above headline in many leading newspapers recently claiming that Thack Moor and Mynydd Graig Goch will have only a  brief moment of fame before they are demoted.  The Ordnance Survey is quoted as saying they are going to move the Newlyn Datum (the Sea Level from which all heights are measured) because of rising sea levels.

Well are they?  No most definitely not the OS Press Office tells me.  It would mean that every contour on every map at all scales would have to be redrawn from scratch.  After all you can't just re-label the existing contours on all the maps - "Please note that the 600m contour is actually 599m".  OS say it would take them about ten years to complete and by the time they finished they'd have to start all over again.

Still there's a plus side to this story.  It keeps mountains in the news and that can't be a bad thing!