5th May 2010, 11:38 AM
Agree with Oxbeast and Sheep ..........but would caution against using a hand-held GPS to establish levels. I would urge that you consult the fantastic facility that is the Ordnance Survey. There is nowhere in the UK that is unmapped and you might be surprised at what the OS can offer in terms of benchmarks and location points in 'remote upland areas'.
With peace and consolation hath dismist, And calm of mind all passion spent...