Bat Cave Ambience | Dark Knight Trilogy Music (One Hour)

For studying, working, relaxing, or just being awesome:)
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You enter a mysterious crawlspace behind a bookshelf in the study of Wayne Manor. Following the dark corridor, you come to an old victorian lift. It clangs and squeaks as you descend down into a massive cavern beneath the earth. The sound of a distant waterfall echoes in the distance. As the lift slows to a halt, you peer into the darkness. From the faint moonlight gleaming through the chamber you see a towering black structure emerge, rising upwards from the flowing pools below. You have entered the home of the Dark Knight.
Oh and please, don't mind the bats.