quick question: can I derive from the numeric sub-directory naming (under ~/myDocs/.maps/Google maps) the geographic area that the sub-directory relates to?

I downloaded a large amount of tiles, both around various cities and along various routes, in different countries. Unfortunately, these tiles didn't seem to be available to Modrana when I needed them, but that's a different story (good old Ovi maps came to the rescue!).

Anyway, I'm tight on space in my MyDocs partition and I want to strip out any downloaded tiles in Italy, Spain and USA. Can I find out the appropriate folder names (under myDocs/.maps/Google maps) and delete just these specific tiles (leaving any UK tiles I currently have untouched)?

Also, once I know what directories i want to delete tiles from, can I delete the whole directory (such that it will be recreated automatically should I in future re-download tiles for that area) or must I leave the directories in place and just delete their contents?

TIA for any advice (worst case, I don't mind just deleting all content under Google maps - as long as that won't prevent Modrana from recreating the directory structure when needed).