New Atlas put together a brief history and demo video of walking "spider" excavators, which look more like anime mecha than real-life machines.
These incredible feats of engineering use wildly articulated legs and a combination of wheels and claw-like stabilizing feet.
The hydraulic arm can be fitted with a bucket or other attachments; this one here appears to have a jackhammer.
The operators of these machines definitely walk with a swagger and drink lots of Mountain Dew.
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