http://www.minimap.co.uk/features.htmI saw this on a science programme on the BBC a few years ago and thought it was a good idea. I hadn't thought about it until a recent thread made me think about bugging out and needing a map.
For those with GPS kits and such this may seem archaic but should the situation arise were your batteries are flat or your GPS got damaged then something like this may have a place.
Alot I know will depend on what maps are available in terms of the areas they cover and the scale of the maps.
I just found this of interest and thought to share it with the forum.