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    <div class="moz-cite-prefix">On 22/8/22 21:16, Tom Crocker wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAHmUbmfxJHfTCWRqyWJG=YWC04MwOppeydwjU2B5m_H+sYKtNw@mail.gmail.com">
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      <div dir="auto">Hi Keith. 
        <div dir="auto"><br>
        </div>
        <div dir="auto">My understanding (and practice) is to map the
          top of the cliff edge. </div>
      </div>
    </blockquote>
    <p><br>
    </p>
    <p>Agree, top edge it what to map. This is the practice in other
      maps. The direction of the way gives the falling direction - right
      hand side (facing the forwards direction) is the fall. <br>
    </p>
    <p><br>
    </p>
    <p>From <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Cliff">https://en.wikipedia.org/wiki/Cliff</a><br>
    </p>
    <p>"The <a href="https://en.wikipedia.org/wiki/Ordnance_Survey"
        title="Ordnance Survey">Ordnance Survey</a> distinguishes
      between around most cliffs (continuous line along the topper edge
      with projections down the face)"</p>
    <p><br>
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    <blockquote type="cite"
cite="mid:CAHmUbmfxJHfTCWRqyWJG=YWC04MwOppeydwjU2B5m_H+sYKtNw@mail.gmail.com">
      <div dir="auto">
        <div dir="auto">You can then add an area of natural=bare_rock if
          the cliff is a slab and extends out 'beneath' the top edge (of
          course, there may also be flat bare rock along the top edge
          and perhaps at the bottom). <br>
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    Also scree, sometimes at the bottom of a cliff.  <br>
    <blockquote type="cite"
cite="mid:CAHmUbmfxJHfTCWRqyWJG=YWC04MwOppeydwjU2B5m_H+sYKtNw@mail.gmail.com">
      <div dir="auto">
        <div dir="auto">The wiki recommends path=climbing_access for
          dedicated crag access, used 1188 times apparently without
          additional tags (e.g. highway=path): <a
href="https://taginfo.openstreetmap.org/tags/path=climbing_access#overview"
            moz-do-not-send="true" class="moz-txt-link-freetext">https://taginfo.openstreetmap.org/tags/path=climbing_access#overview</a> </div>
        <div dir="auto">Personally I would just add them as footways if
          their placement seems reasonably stable (with additional tags
          as appropriate). </div>
        <div dir="auto">You can add the starting point of each route
          with climbing_route=bottom <a
            href="https://wiki.openstreetmap.org/wiki/Climbing"
            moz-do-not-send="true" class="moz-txt-link-freetext">https://wiki.openstreetmap.org/wiki/Climbing</a>
          although I haven't done this as I am unsure about the
          appropriateness of any source of names.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">P.S. I know of no good way of dealing with
          overhangs regarding natural=* or paths (possibly use of
          covered for paths, or later?)</div>
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    I have used covered. <br>
    <blockquote type="cite"
cite="mid:CAHmUbmfxJHfTCWRqyWJG=YWC04MwOppeydwjU2B5m_H+sYKtNw@mail.gmail.com">
      <div dir="auto">
        <div dir="auto"><br>
        </div>
        <div dir="auto">Cheers</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Tom Crocker</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Mon, 22 Aug 2022, 11:51
          Keith, <<a href="mailto:keith@fachwen.org"
            moz-do-not-send="true" class="moz-txt-link-freetext">keith@fachwen.org</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div style="word-wrap:break-word;line-break:after-white-space">I’m
            interested in adding missing rock-climbing cliffs here in
            Snowdonia. There are lots 🙂
            <div><br>
            </div>
            <div>Mostly obscure little ones, that can be quite a
              challenge to find when walking to visit for the first time
              due to bracken, no real path, etc.
              <div><br>
              </div>
              <div>
                <div>Just checking … should the line of the cliff be at
                  the top of the edge of the cliff, or at the bottom
                  where rock-climbers naturally want to be setting up
                  kit, etc.</div>
                <div><br>
                </div>
                <div>As a climber, the need is to know where to walk to,
                  best place for setting-up, etc. </div>
                <div><br>
                </div>
                <div>As an OSM mapper, maybe the issue is ‘where is the
                  crag edge?’ ie the dangerous bit for walkers, general
                  public, etc. </div>
                <div><br>
                </div>
                <div>Most existing crags seem to be mapped somewhere in
                  ’the middle’ of the cliff, as a line of nodes, or the
                  actual top edge. </div>
                <div><br>
                </div>
                <div>One ‘best practice’ might be to map the top edge of
                  the actual cliff, and survey the path to where
                  climbers mostly go to park their rucksacks, etc</div>
                <div><br>
                </div>
                <div>Thanks.</div>
                <div><br>
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                <div><br>
                  <div>
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                      <div style="font-size:12px;margin:0px">Keith
                        Robertson, Tyn y Pwll, Fachwen, Caernarfon,
                        Gwynedd, North Wales, UK LL55 3HD</div>
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                      <div style="font-size:12px;margin:0px">Text or
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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