With nearly a month to go before the release of The Hobbit: An Unexpected Journey, we’re not exactly lacking in promotional material.  We’ve seen production blogs, a handful of trailers and TV spots, and posters galore, but if you’re still itching for some new The Hobbit material, we’ve got just the cure.  150 behind-the-scenes images from director Peter Jackson’s adaptation have been rounded up and put together in one handy gallery, giving fans an inside look at how Jackson brought Middle Earth to life again.  Moreover, artist Neil Finn's fantastic end credits song for the film, "Song of the Lonely Mountain," has been released online in full.Hit the jump to browse through the images and listen to the song, and if you missed any of Steve’s set visit coverage be sure to check out 65 things to know and his interviews with Peter Jackson, Ian McKellan, Martin Freeman, Richard Armitage, and Weta Workshop’s Richard Taylor.  The Hobbit: An Unexpected Journey opens in 3D on December 14th.Click over to Rolling Stone to hear "Song of the Lonely Mountains."  Image gallery via CBM.Here’s the synopsis for The Hobbit: An Unexpected Journey:

“The Hobbit: An Unexpected Journey” follows title character Bilbo Baggins, who is swept into an epic quest to reclaim the lost Dwarf Kingdom of Erebor, which was long ago conquered by the dragon Smaug. Approached out of the blue by the wizard Gandalf the Grey, Bilbo finds himself joining a company of thirteen dwarves led by the legendary warrior Thorin Oakenshield. Their journey will take them into the Wild; through treacherous lands swarming with Goblins and Orcs, deadly Wargs and Giant Spiders, Shapeshifters and Sorcerers. Although their goal lies to the East and the wastelands of the Lonely Mountain, first they must escape the goblin tunnels, where Bilbo meets the creature that will change his life forever… Gollum. Here, alone with Gollum, on the shores of an underground lake, the unassuming Bilbo Baggins not only discovers depths of guile and courage that surprise even him, he also gains possession of Gollum’s “precious” ring that holds unexpected and useful qualities… A simple, gold ring that is tied to the fate of all Middle-earth in ways Bilbo cannot begin to know.