Stacked, these iPads would build a mountain 35 times higher than Mount Fuji.

FORBES: By Rob McKernan

By all reports, Fuji is a far cleaner place to visit today, particularly in the upper reaches of the mountain.

CNN: Ken Noguchi: Scaling environmental heights

Mt Fuji, at 3, 776 (12, 460 feet) is Japan's highest mountain.

BBC: Japan's Mount Fuji 'set for Unesco listing'