Like Dig this Great Video of Cutting Edge Digging Machine

Be patient, the robot takes a sec to appear after you launch the video
From: The Register
"Subterranean mole-bot under development"
"British boffins are developing a mechanical, mole-like robotic system which could dig its way through debris or rubble. The technology could be used to build burrowing rescue machines able to retrieve people trapped by collapsing buildings or tunnels.
New Scientist reports that the men behind the new kit are Robin Scott and Robert Richardson of the Artificial Intelligence Group at Manchester's School of Computer Science. The engineering brainboxes were apparently inspired by the digging action of talpa europea - the common mole - rather than the fiction of Edgar Rice Burroughs et al..."
http://www.theregister.co.uk/2007/09/18/mancunian_mole_cruiser_robot/
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