That is because the path ends at the top of a rock high above Zion Canyon.

VOA: special.2009.04.15

The giant ferns and trees of prehistory crowded in on a silver path that hovered six inches above the ground.

ECONOMIST: Ray Bradbury

Another is The Night of the Living Dead Pixels, a graphic novel (shown above) that allows you to choose your path, with terminal pages featuring QR codes that trigger videos on your smartphone.

ENGADGET: Boutique publishing house les ��ditions volumiques shows us that print is far, far from dead