[Talk-GB] Adjacent nature reserves

[Martin Wynne]

At this location there is a large area of open sandy heath, forming a 
nature reserve:

  https://www.openstreetmap.org/#map=16/52.3716/-2.2816

In fact it is two nature reserves side by side with different names and 
ownership. One is charity-owned and managed by the county Wildlife 
Trust, the other is owned and managed by the local District Council.

On the ground the boundary between them is barely visible, just odd bits 
of old fencing in places, and footpaths criss-cross between them. The 
visitor material tends to combine them as a single nature reserve, and 
that is how most folks think of them:

 
http://www.worcswildlifetrust.co.uk/reserves/the-devils-spittleful-rifle-range-and-blackstone-farm-fields

The council's web site refers to them linking "seamlessly":

 
https://www.wyreforestdc.gov.uk/things-to-see-do-and-visit/countryside-and-nature/nature-reserves/rifle-range-sssi.aspx

But on the OSM standard map, the common boundary is shown as a bold 
green line, which bears no relation to anything on the ground and could 
be misleading for visitors.

Here's a picture of the boundary, running approx from 8 o'clock to 2 
o'clock:

  http://85a.uk/rifle_range_boundary_960x448.jpg

Is there a better way to map this? If I combine them as a single nature 
reserve, is there a way to name the two parts of it separately? Is there 
a way to show the common boundary less prominently?

Thanks,

Martin.