In the industrial wilds of Petaluma, California, a group of giant robot artists called Survival Research Labs (SRL) staged a smackdown with an enormous metal chicken and "Big Arm." (Yeah, it's really big.) Witness the robot rumble!

SRL has been covertly (and not-so-covertly) staging its industrial mayhem robot smackdowns since the 1980s. In this series of pictures, you can see their latest show, held over the weekend. Witness the giant chicken being menaced by Running Machine, then watch the majesty of Big Arm as it fights and crushes pieces of industrial (and natural) debris.

If you want to see more of the deadly megabot melee, you'll want to check out all the other photos via Karen Marcelo.