[Tagging] cliffs and embankents or anything else

[John F. Eldredge]

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.


On September 4, 2014 4:33:02 PM CDT, Zecke <zeck at saeuferleber.de> wrote:
> Am 04.09.2014 22:09, schrieb Friedrich Volkmann:
> > On 04.09.2014 21:19, Zecke wrote:
> >> Spoil heaps can be mapped as unclosed lines when they
> >> are attached to a (natural) mountain. Then only  the visible part
> of the
> >> contour will be mapped as a line
> > This does not sound right. Spoil heaps are areas and should be
> mapped as
> > such, or abstracted to a node when you don't know the dimensions.
> >
> > Spoil heaps (positive landform) are the complement of quarries
> (negative
> > landform). I have never seen a quarry mapped as a line.
> >
> I'm mainly dealing with historic mining. Spoil heaps of historic
> mining 
> however are very real. And they often developed directly in front of
> an 
> adit at the base or slope of a mountain. I've seen a lot of them and 
> because of their origination history they are at the flank of a
> mountain.
> 
> Mapping of historic spoil heaps is at its beginning that is why I 
> started this discussion. And I would say70% of them I would map as a 
> line, 30% as an area because its surroundings are clear. But even for 
> the area type I would need a way to map the slope as not every spoil 
> heap has steep slopes. Discussion was about started slopes, not about 
> spoil heaps.
> 
> Zecke
> 
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-- 
John F. Eldredge -- john at jfeldredge.com
"Darkness cannot drive out darkness; only light can do that.  Hate cannot drive out hate; only love can do that."
Dr. Martin Luther King, Jr.
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