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not resolvedClueless question of the day - on the explorer maps, what is a single black line?
Eg the ardgarten forest - forestry commission land - is shown as forest - green with ,conifer type trees. But around the edge of some, but not all of it, a single black line runs. ie along the tree line between the forest and the hills.
I cannot find anything like that on the legend. I'm sure I'm missing something obvious.
Thanks all
Fence?
Sounds plausible (will check in a few minutes) but not on either Landranger or explorer legends that I can see (on OS map app)
Fence or wall
I'd have said wall, but that's because I do most of my OS referencing in the Lakes, where it's usually a drystane dyke.
It's a boundary; "a fence, hedge, wall, bank or ditch will be shown by a single solid line"
The dashed line (I think) is a boundary without the above fencing/walling. I.e. the edge of the forest in your example.
The difference between the 1:50k and 1:25k versions is that the latter encodes more details of the boundary than the former.
These are dry stone walls. On the explorer maps you can generally (but not always) rely on them to navigate by. Fences are not marked on OS 1:25,000 maps I beleive, unless they are borders of roads and tracks. Broken lines are open land to the side, solid lines are fenced off/restricted access to the ajoining fields/land.
"Fences are not marked on OS 1:25,000 maps I beleive"
Assume you meant 1:50,000 there.
If it's a Forestry Commission with an unbroken line then chances are it will be a deer fence and not easy to get over.
Not that you'd probably want to anyway as the typical sitka plantation is nigh-on impenetrable.
Fences/walls on the map can mean anything on the ground. For Scotland, remote ones in the lowlands are likely to be fences, probably intact, but often without barbed wire.
In the highlands it's more likely to be the remains of a wall or fence. A few old fence posts 50m apart still get mapped as a solid line.
cb is pretty much on the money. It's also worth bearing in mind that not everything gets resurveyed between each update of OS maps; field boundaries and fences are likely to rely on older data than roads and houses.
Regardless, 1:25 000 OS maps rock for detailed on the ground navigation
Don't know anything about these - but presume some people do -
1:25,000 scale Superwalker maps
Ah, Harvey Maps. Made in Doune.
I have a few. They don't cover the whole country, but seem to be aimed squarely at walkers/climbers/that sort of person (unlike the OS, who have a whole load of people to try & please). So Harvey Maps cover the Torridon hills on one sheet, while with the OS they're on the join of three...
Harveys also do linear maps for things like the West Highland Way - useful so long as you don't walk off the little strip of map surrounding the route you are supposed to be on!
My brain is very set up on OS 1:50 000 maps (I use them all the time, because those are the ones I'm used to) and so I find the Harvey ones slightly confusing just because they use different symbols; but that's just a matter of thinking a bit. What is more infuriating is the 15m contour interval - it is much easier to work out height gain from the OS!
What is more infuriating is the 15m contour interval
Why do they do that? Just for scaling purposes, or is it because 15m is very nearly 50 feet (give or take 9 and 29/64ths of an inch) so it helps old money hillwalkers readily calculate their ascent/descent in feet?
10m is 32'9"45/64 so not as easy to do the maths.
second everything Fimm says about Harvey maps, good and bad. Would add that the colour schemes for altitude are good and the other advantage is the thin waterproof (or resistant) paper - compared to the bulky OS Active Maps.
Thanks all. Although being a paper map person in principle, I ended up using the map app for our expedition. Worked pretty well. Tried their route mapping. Not much use for planning that I cld see (just makes a thick purple line on map and hard to see fine detail underneath). I thought it would be useful to calculate distance, which it was, but then discovered it didn't tell us how much we had climbed ie elevation. Bizarre. Can't see the point.
I have the Harvey Pentlands map for hill running, which is very good, apart from the Möbius strip type manoeuvre needed to plot any journey across the fold.
As @paddyirish (where's he from?) says, the waterproofness is excellent for the normal conditions up there.
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