To really appreciate the detail over a large area this approach can yield click the image to see a larger version.
4 Image "Stitch" Using A Canon G5
To see a related approach done on a much larger scale take a look at this "Giga Pixel" image. Giga meaning contains 1 billion or more pixel elements! It's the same technique done on an exponentially larger scale. I love it. Note to self, acquire a larger hard drive. ;-)