Small update to earlier discussion.http://www.dynaxdigital.com/other-photography-equipment/gps-cs3-image-tracker/
And here is an example of result importing the GPS -data to Google Earth. This is a view to our trip to Sarek National Park and you can see a small part of the approaching route. Small river at bottom of image. The device saves a point in every 15 seconds and one AA -battery lasts for a day. Naturally you can import the points to EXIF -data, so you don't have to remember the exact location of picture taken
Very handy tool when you are in move ...