landscapearchitecture via notational:
Tokyo University graduate student Takatsugu Kuriyama [created] an accurate three-dimensional model of Tokyo’s lifeline by using multi-colored tubes strung with wire. Different color liquids pulsate throughout all 18 lines, creating a staggering picture of what goes on below the streets of Tokyo every day.
I’d love to see an equivalent of this for the London Underground. I did once have a look for detailed elevation (or should that be depth?) data for the stations, if not the lines, but I didn’t look that hard or find anything.
I also considered trying to hack up an inertial recording system, but unsurprisingly that’s kind of tricky. (It’s a shame the iPhone’s gyroscopes probably aren’t up to it.)