I am doing geology fieldwork in Agrentina in a month and I was thinking about getting an iPad for the GPS integrated maps, but I wasn't sure if there were any apps out there that had detailed international maps for remote regions (something like google earth but able to work off the network). I have been looking a few apps on my iphone like Gaia GPS but I can't access their map store without buying the app. Galileo supposedly lets you create maps but they recently lost support for google (which would have been most useful). Topo maps would also be nice. Does anyone here know of any other apps out there that I might be able to get some good maps of Argentina for or even load my own maps? Thanks!