I updated the bridge link. For some reason it was pointing to the condor as well.
I remember now that in KQV the “roc” had two heads. What happens in the movie is that an earthquake causes the cliff under the actors to fall and ride their rock down the snowy hill. They hit a rock and get sent into the snow. The condor comes down and grabs the kid and a man shoots the condor down.
There is another movie “Chandu the Magician” that has a “death ray” that is similar to the “wand and cheese” machine at the end of KQV.