nationalmap

this is probably old news for you "seasoned prospectors" but i found this map site
it sort of combines google earth with tengraph and you can overlay fault lines
only downside so far, i haven't figured out how to save or export data
see if any of the more tech savvy people can figure that one out
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I was on there the other day and it wouldn't load the aerial image, refreshed page and still nothing, much more recent images on there than google earth, when it works it is a great site to use.