I've spent a bit of time adding most of the lakes and a few rivers of Southern Peru to the map, mainly in the Arequipa district, tracing them from the Yahoo imagery. This area had pretty much no mapping at all until a few weeks ago (with the exception of Lake Titicaca), so it seemed appropriate to add a number of the basic geographical features. I've also added a few of the major volcanic peaks, but these don't seem to show up on the map. Hopefully this should provide a basic geographical framework for further mapping - the imagery isn't high enough resolution to be able to make out all the roads clearly (at least not the unpaved ones, i.e. the majority), but the mountains are pretty spectacular and valleys easy to follow.

A thought occurred to me - some of these places are very remote, and probably have never been accurately mapped. The advent of satellite imagery makes this possible for the first time.