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Originally Posted by alfonso-lanka
Beware of the placenames: these need BIG corrections, as they were mostly plucked from Russian maps (and converting Tibetan names from Russian into English is not my strongest point).
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Rather you than me.
Some ideas for you -
DEM data can be used to generate the topo lines - and they look fairly accurate in other parts of the world. (lots of work there)
City/towns can be had from some us site - the resoultion (accuracy limited) is not good - but if you used the russian maps as an under lay (calibrated to the topo lines above) you could move them to a more accurate location. (less work than what you are doing? There should be a link on teh Oziexplorer site ?)
Then it would be a matter of tracing out the roads - roughly where it does not matter .. with more precision where they cross.
After you get tracks - include them for accuracy. POI for fuel/places to stay/ATMs/views .. etc .
Look forward to seeing your work ..