On The Doorstep - As Bilbo Baggins and the dwarves travel through the desolation of Smaug, their mood changes. While they are geographically closer to their goal, achieving it seems as far away as ever. Bilbo, however, continues to study the map and contemplates the runes. After the group discovers the secret door, the attempts to open it fail. Only Bilbo continues to consider options. When the old thrush (bird) appears, the hobbit realizes the events described on the map are occurring, and he encourages Thorin to use the key to open the entrance.