06 Sep 2016 A BABY GROWS UP
There was always a suspicion that Calf
Top in the Yorkshire Dales (Note not "The Calf", which is in the Howgills) might really be
a two thousander, but very careful measurement ten years ago by John
Barnard, Graham Jackson and Myrddyn Phillips found it just missed mountain status.
The Ordnance Survey measure heights these
days using a fantastically accurate GPS system. They then have to convert
their measurements into heights relative to Sea Level (known as the
Newlyn Datum). The mathematical process is called OSGM36(02).
Now however the OS have introduced OSGM36(15) and this makes the
difference - all two centimetres of it!