[talk-au] Map errors in regional Victoria

[Brett Henderson]

I performed some random mappings across Victoria while driving to and 
from Mt Hotham over the weekend.

I was comparing my tracks with those from other sources and came across 
this peculiarity at Mitchellton Winery near Nagambie.
http://maps.google.com/maps?f=q&hl=en&geocode=&q=mitchellstown,+australia&ie=UTF8&ll=-36.852153,145.090599&spn=0.046634,0.079479&z=14&om=1

Notice the proliferation of Blunt Streets.  More interesting is the fact 
that these streets don't actually exist.  If you look at the aerial 
photographs, they're actually tracks within the winery itself.

The same errors occur on the http://www.street-directory.com.au site.  
The vicroads.vic.gov.au site doesn't show these roads but it does show a 
Blunt Street nearby.

I wonder how these errors were introduced.