Ben and Mitch finally meet up at Mount Rushmore and agree to work together to find the treasure. Ben finds the 'islands of stone' and Mitch adds the last clue: 'The answer will only be revealed under a cloudless rain. Sprinkling the rocks with their water bottles, they uncover the figure of an eagle. The final clue, possessed by Mitch, say to 'surrender your hand to the heart of the warrior.' Ben sticks his hand in the hole in the middle of the eagle, pulls a lever, and a rock doorway opens. Ben and Mitch, accompanied by Abigail (Diane Kruger), Riley (Justin Bartha), Patrick (Jon Voight), and Emily (Helen Mirren), make their way into the cave, encountering several traps along the way. Patrick and Emily get separated, but they all end up at the same place -- Cibola, the City of Gold. Mitch apologizes for smearing the name of Thomas Gates and explains that it was the only way he could get Ben to join in the search. Suddenly water starts seeping into the city, threatening to block their way out. Noticing that the water seems to be draining, they follow it to a drainage tunnel beneath the city. One person will have to stay behind, however, in order to hold open the stone door. Mitch demands to go first by holding a knife to Abigail's neck, so Ben agrees to stay behind. Everyone gets out except for Mitch and Ben, who become trapped because of the current. Ben is stuck in the door, and Mitch is the only one who can open it. Mitch decides to open the door, letting the current push Ben through but asks Ben to let the world know that it was he (Mitch) who found Cibola. Ben is immediately taken into custody by FBI special agent Sandusky (Harvey Keitel), but the President exonerates him by explaining that Ben did not kidnap him but actually saved his life when the door accidentally closed in the secret tunnel they were exploring. He shows Ben an article for tomorrow's newspaper that names Thomas Gates a national hero and asks him whether he read page 47 on the Book of Secrets. Ben nods and replies, 'It's life altering.' Everyone, including Mitch Wilkinson, is given credit for finding the City of Gold, Emily can be seen later cataloging the treasures, and Ben and Abigail get back together. In the final scene, Riley sees his red Ferrari bearing a note from the President saying 'Tax free.' He jumps in, starts up the engine, and backs into the car behind him.