OS map odd looking symbol

[hannahb]

I was around Coniston Old Man & Dow Crag at the weekend (both days, for reasons I won't go into ) and noticed on the OS 1:25,000 map a weird looking blob of colour.

It's a light green patch on the image of the map, and it's at the top of the quarry area in the photo. The legend suggests it indicates access land within a woodland. But there are zero trees there, let alone a woodland. There is a spring.

Does anyone know what it represents?

 

[Lankyman]

My oldest version of that scale map (1998, before the shading of CRoW access land) also seems to show a pale green patch. It's very faint and virtually invisible unless you definitely look. Odd. You could try contacting OS?

 

[hannahb]

That's interesting; so not CRoW related!

 

[Ad W]

An intentional error that they use for copyright investigations?

 

[Pipster]

Could be a copyright trap?

 

[Leclused]

Perhaps an indication of unstable ground due to quarry nearby? Or old workings of the quarry, a zone used as dump area of waste ground?

Imo : quarry related

 

[hannahb]

An intentional error that they use for copyright investigations?

Yeh I wondered this. But historically these were usually small buildings that don't exist, or small roads or tracks. Apparently they now use stylistic features in order not to mislead map users, so it could be that, but I don't really know what that would look like.

 

[Andy C]

My paper copy of the 1:25,000 map, dated 1994, does not have the green blob. Nor does the 1961 version, which is available as a scan of the paper version of the map on the National Library of Scotland's online collection. But the two current digital copies that I have looked at (Streetmap and Digimap) both have the mystery green blob. So it could be a copyright trap, or perhaps some fault in the digitisation?

 

[aricooperdavis]

That is very odd.

The legend (click through from here if the link doesn't work) clearly suggests that it represents "access land in wooded area", which would be wrong.

If you look at the same region on their Vector Tile product, which allows you to visualise the data used to draw the Leisure product at a far higher resolution, you can see that there's no vector area defined there.

As such I think it's less likely that this is an error where a region has been visualised in the wrong colour or something, and more likely to be a copyright trap.

Well spotted!

 

[wormster]

I'd always assumed that the symbol meant scree covered in vegitation.

 

[martinr]

.... the two current digital copies that I have looked at (Streetmap and Digimap) both have the mystery green blob. ....

Also Systematic Maps

 

[mrodoc]

A pea soup- stain? Rather like the islands referred to in Ring of Bright Water.

 

[IanWalker]

I contacted OS. They confirmed it is an error and will be removed.