In contrast o the exteriors were the interior dark recesses of the labyrinthine cave-shaft sequences (shot in a studio) that were particularly allegorical - signifying the impenetrable blackness of the twisted mind of the self-destructive protagonist, as he schemed and descended further and further into his own entrapped existential state - literally a hole from which he couldn't escape.To facilitate their escape, Caesar made a PA announcement to all keepers and handlers: "There's $50,000 worth of apes in jeopardy.He wouldn't come after me, not him.Regiment, service, duty! Why should I stand what you did for them? Why should I? Why should any of us? Why?McGregor slaps Stone across the face: "I told you to forget it," and then explains his sense of stiff upper-lip British duty to loyally serve, echoing advice he had heard earlier from Major Hamilton: "There are some things they don't teach you in military college." That night in the Valley of the Dead, the Sorceress attempted to slip away, but her ankle was tethered to Mathayus's leg and she tripped.One of the company's advertising campaigns involved placing Bull Signs on outfield fences of ball stadiums, and offering prizes or free products to any ballplayer who hit the sign or knocked out a home run.