Apparently the scene will involve Christian Bale's Bruce Wayne 'discovering' his new cave, the interiors of which have been built on a sound stage in Los Angeles. According to the local press, Brecon Beacons in Wales is to be used as the new waterfall entrance to a rebuilt Batcave that will be used for the opening sequence of The Dark Knight Rises. Obviously there a spoilers in this post but you should recognise that from the title alone so don't blame me if you read something here you might regret.