The production then got larger, with Wood and Astin shooting scenes in Mount Ruapehu for Emyn Muil and Mount Doom. On 13 April 2000, Andy Serkis joined the cast. During this shoot, cross coverage was used for a pivotal scene in The Return of the King. In the meantime, prologue scenes and the Battle of the Black Gate were shot, during which Sala Baker wore the Sauron armour. The Black Gate scene was filmed at a former mine field in the Rangipo Desert, and soldiers served as extras. With the return of Sean Bean, the Fellowship reunited and proceeded to shoot the Moria sequence and the Rivendell interiors, including five days of coverage for the Council of Elrond.