Back rock, footwork with the back on the ground.
Moves on the back using the feet (e.g. tracks, neckmoves) were done in the 1970s. Icey Ice can be seen doing a back CC during an appearance on Soul Train in the mid-1980s. Members of Battle Squad further developed back rocks in the 1980s and 1990s . Storm's Footwork Fundamentals describes several back rocks in the chapter "Backbonebasics" .
List of Back Rocks
CC on the back.
A jump with one leg over the other, with a roll from the back onto one shoulder.