<html><head></head><body>I suppose one could map both the spoil heap as a whole, as an area, and also the crest, as a line. The crest would be useful as a landmark, from a distance. The footprint of the spoil heap would be useful as a landmark, at close range. My impression is that no one would likely try climbing the spoil heap itself, as this is equivalent to climbing a talus slope, prone to triggering a landslide.<br>
<br><br><div class="gmail_quote">On September 4, 2014 4:33:02 PM CDT, Zecke <zeck@saeuferleber.de> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">Am 04.09.2014 22:09, schrieb Friedrich Volkmann:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;"> On 04.09.2014 21:19, Zecke wrote:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;"> Spoil heaps can be mapped as unclosed lines when they<br /> are attached to a (natural) mountain. Then only the visible part of the<br /> contour will be mapped as a line<br /></blockquote> This does not sound right. Spoil heaps are areas and should be mapped as<br /> such, or abstracted to a node when you don't know the dimensions.<br /><br /> Spoil heaps (positive landform) are the complement of quarries (negative<br /> landform). I have never seen a quarry mapped as a line.</blockquote><br />I'm mainly dealing with historic mining. Spoil heaps of historic mining <br />however are very real. And they often developed directly in front
of an <br />adit at the base or slope of a mountain. I've seen a lot of them and <br />because of their origination history they are at the flank of a mountain.<br /><br />Mapping of historic spoil heaps is at its beginning that is why I <br />started this discussion. And I would say70% of them I would map as a <br />line, 30% as an area because its surroundings are clear. But even for <br />the area type I would need a way to map the slope as not every spoil <br />heap has steep slopes. Discussion was about started slopes, not about <br />spoil heaps.<br /><br />Zecke<br /><br /><hr /><br />Tagging mailing list<br />Tagging@openstreetmap.org<br /><a href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a><br /></pre></blockquote></div><br>
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