In the course of a recce, I encountered what appeared to be another obstructed right of way (RofW), this one on Skipton Moor. My new and recently purchased OS 1:25,000 map shows the line of the RofW going over a west-east dry stone wall and continuing in the same direction but on the opposite (southerly) side. At that point the wall has partly collapsed, an apparently broken-down stile with what had been a high but non-barbed wire fence strung across it. The fence has been bent down in clear attempts to get over, but remains precarious. A narrow but clear path continues on the original (northern) side, then crosses a waymarked north-south fence. A few hundred yards after that it peters out before a descent to a north-south wall without stiles.
My first thought was that I'd gone wrong (there are lots of stiles and gates in the area, not all of them waymarked). So I retreated to the last location I was certain of, and tried again, this time approaching the wall from the south. It was the right place, but the fence was even less accommodating from that side. So the map appeared to be correct, and after a bit more careful wall-climbing (it's Open Access, so that's all right then) I continued on an easy but invisible path-line towards an obvious track which obeyed the map.
On recce two, or was it three, I tried the northerly path again, this time paying attention. Sure enough, it does cross the wall from north to south, but at a point further along. I had failed to notice a diagonal waymark above another broken-down stile, on the other side of which is a mapped RofW. But this stile was also obstructed, the offending item being a piece of rope strung between a strand of barbed wire and another wooden post. Since the rope was clearly dangerous and without obvious purpose, I untied it and replaced some of the fallen stones.
My edition of the OS map seemed, then, to be wrong. So I looked today at Skipton Libary's copy of the North Yorkshire County Council definitive map, which is dated 2005. The RofW is shown as it appears on the ground and not on the paper map, that is, continuing on the north side of the wall and crossing over at the waymark with the piece of rope which I was, thankfully, within my rights to untie. Inspection of the "new" and "revised" map shows it to be dated 2002, so, unless the 2005 definitive map has itself been superseded, the OS version is indeed, at this location, incorrect.
But Ordnance Survey revenue on paper maps now makes up only a small proportion of their total, the source maps having been digitised. So can the digitised versions also be incorrect - in this case, as much as ten years out of date ? It seems that they can, so as Natural England's advice* on definitive maps says:
"The Ordnance Survey receives copies of definitive maps and modification and public path orders which have come into operation and uses them to provide the rights of way information that is shown on Explorer (1:25,000 scale) maps and Landranger (1:50,000 scale) maps. Each map shows the date which Ordnance Survey used as its deadline for rights of way information. However, in case of disputes about the status of a right of way, reference should be made to the definitive map ... rather than the Ordnance Survey map, which cannot in itself provide conclusive evidence.",
it really does seem that the OS's digitised source maps may, in such cases, count for no more than some of their most recent paper versions. So, if in doubt (and before untying pieces of rope and rebuilding walls), consult the relevant council's definitive version (you first might try Rowmaps.com to confirm its existence) rather than the internet or your "up to date" mapping software.
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And the previously reported RofW stile obstruction - the one with the dead christmas tree ? That one *is* on the definitive map (as well as OS's paper and digitised versions), so I was right to cut its ridiculous bits of yellow string prior to taking a (non-LDWA) group across it (and back over again in just 100 metres). Last time I was there it was still unobstructed, the liberated but bald tree just as I had left it.
Iain.
* 'A guide to definitive maps and changes to public rights of way - 2008 Revision'.