Having defeated Belloq, he reveals that his boss, Dr. Jurgen Voller, who had been working with Walter Donovan and Elsa Schneider, has the devices Elsa took from you. Now in control of the train, you have arrived at the Denver Union Depot, and face 2 choices: 1.) Take Belloq's train and chase down Voller, or 2.) Leave the train here, and head for the mountains and ADVENTURE.  Choose wisely as there is no going back...