Classic lucha libre submission, stretching the victim's back over the attackers knees, and pulling the face into a chinlock. If the victim is masked, the attacker will often pull him backwards by that mask. The attacker is at slight risk of pinning themselves if they lean all the way back.
Popular spot for singles matches. In the late 00s, CMLL singles matches had almost a pathological tendency to include a spot where the tecnico celebrating in the ring after a dive, only for the rudo to sneak in behind him and pulls the tecnico into the hold. After a few years of the tecnico never ever giving up in that situation, they stopped doing it so much.
This move was invented and named after Cavernario Galindo.