Cliffbots would be a half of a pair of robotic Mar rovers.

> One-half of the pair would be the more passive of the
two and would make its way to the top of a martian cliff,
where it would anchor itself near the cliff-edge,
and would then reel-out the smaller cliffbot at the end of a
kevlar-tether/cable.
The tethered cliffbot would then make its way down the face of
the cliff to examine the layers of rock in the cliff with mini-TES
APXS, Mausbauer spectrometers, etc...

Of course theres always the danger of martian winds generating
a pendulum-effect with the tethered cliffbot, and there's the hazard
of tethers snagging, etc...

Jacob

"We choose to go to the moon, and do those OTHER THINGS,
not because they are easy, but because they are hard."
John F. Kennedy