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We have applied these methods to find Geographical coordinates of the PingER type landmarks. By using manual methods, we have updated the coordinates of 14 PingER nodes successfully. We have used manual approach because either there was no contact person in our database or someone among us has already visited that site. Similarly we had sent the mails to the contact persons of other PingER nodes and we have updated the coordinates of 19 PingER nodes. Now we can say these coordinates are correct witin a radius of few meters.
A detail list of nodes, their coordinates and method used is attached. List of Nodes
The locations of the landmarks can be viewed via the TULIP map.