Google Earth

[DaveW]

They update the data from various sources as it becomes available.

In remote areas with little change the data may be up to 10 years old (Outback Western Australia for instance) but they will update even parcels amongst that if there is significant change. For instance they may update the townsite but not the surrounding area of a remote town.

And the photos range from sattelite down to reasonably close aerial photos.

I work with stuff every day - mostly at 1:25000 to 1:2000.

Mining stuff and some residential aerial surveys.

3D imagery, not just the "google" style flat aerials.

With some of our mapping stuff we are picking up individual street signs.

What can I say - it takes time from the important stuff, but it pays the bills. :roll

[DennisORourke]

I use Google Earth to map historical/Archaeological date for my personal study. It may be possible to locate hidden features with the new clearer version!