Clever zoomable map on paper

I feel the urge to figure out how this map is made and then write up an instructables on the matter.

EDIT: It turned out to be simpler than I thought. I'm going to make a mini-conference program and write it up tomorrow.

I'm pretty stunned by how bad the movie player on this site is. In terms of how handles buffering and showing the timeline to the user it's almost the inverse of what you would want to do.

Paper imitates digital!

The idea is clever and it's a little surprising how no one did this before, especially when considering how much about reading maps consists of folding the damn thing!

I've been cursed at more than once because I didn't fold a map the right way. And like andrewljohnson said in this thread (http://news.ycombinator.com/item?id=1074300), the complication of folding could hardly have been the limiting factor of coming up with this. :)

Cool, but good luck getting that thing folded back the right way. One wrong fold by some incautious user and your zooming days are done.