Chris Malcolm said:The important wuestion is how much detail have they
omitted that you want? I guess you want mountain bothies,
tiny streams, and footpaths. That's the kind of detail
that might well be omitted in "state of the art data
compression" :-)
Footpaths? Unlikely. What's the big deal with footpaths
anyway? Half the time they aren't shown correctly on the
paper maps anyway. Countless footpaths exist which
aren't shown on the maps and many of those which are no
longer exist or are horribly overgrown, or they don't
follow exactly the same path as shown on the map (as
revealed by GPS).
Since wild walking essentially means "wandering wherever I
please" to me, the existence of a footpath or lack of is
somewhat irrelevant. If there's a footpath going in the same
direction as me, fine, I'll follow
it. If not, I'll just choose the path of least resistance,
preferably avoiding bogs and sticking to dry ground
with short grass or rocks.
The depiction (or not) of footpaths on the map is often an
inconvenience. If one is shown to exist then I may try to
follow it, only to be annoyed to find that it doesn't. It
would be less bother to choose my route via other methods.
Alternatively if an area shows no footpaths I may be happy
to come across one which happens to be heading my way.
My usual planning technique is to use contours to plan my
route, modified by the existence of rocks, streams and
bogs. I mainly try to avoid boggy ground (often implied by
streams if the contours are gentle) and to follow rocky
outcrops. If neither are indicated then I study the
contours to try to determine ridge lines and higher ground
which are less likely to be wet. The existence of a path is
convenient if it really does exist, but is not my main
criteria for route planning.
If you plan walks purely to follow paths then you'll
frequently find yourself wandering across wild land
wondering where the hell the path is, whilst at the same
time you'll be denying yourself access to areas which
actually have paths but which simply aren't marked. More to
the point, a lot of wild land is easily walkable whether it
has paths or not, so you really shouldn't limit yourself
unnecessarily.
Given the inherent inaccuracy of paths on maps, I choose not
to pay them too much heed. Thus a GPS map with no paths
would be no real problem to
iu. Where paths would be a problem would be in farmland
and forestry, but on the open hill it's really not
much of an issue.
Quoted message said:It would be a shame to spend all that money on a GPS with
OS-derived mapping to discover that what you've bought is
a very nice accessory to the still essential much more
detailed traditional OS paper map.
If I take the trouble to input a sufficient number of
waypoints into my GPS, even in an area that I've never
visited before, then I can walk all day without ever
needing to look at the map (the memory of which will still
be fresh in my mind after previous study and which will be
triggered by the carefully chosen waypoints). This I've
done on many occasions. Since this is true of a non-mapping
GPS, I hardly think that having a topographical GPS map at
my disposal is going to necessitate me reaching for the
paper map very often.
Of course I'd always bring a paper map. Not because I'd need
it, but partly to study complex detail if desired (as
opposed to necessary), and partly as a backup. Not that I
expect my GPS to run out of battery power, but they can be
dropped and broken, as some here will testify.
As an interesting aside, whilst walking with Chris Street
and friends in the Ystradfellte area a few days ago
encountered a couple of Americans who'd moved to England a
few years back. The female half of the partnership claimed
that the area was confusing to walk around because there was
"too much detail" on the map. Evidently not used to the
degree of detail and accuracy that the OS provide. I can see
a good argument for less detail if the detail provided is of
the "need to know" variety, but I suspect that the kind of
detail that they needed to know (footpaths) would fall far
short of the kind of detail that I need to know about
(contours and cliffs).
Still, my point is that any GPS mapping detail would be
an improvent over what mine currently shows, and just
having contours, roads and forestry boundaries would be a
major help.
Paul
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