Our most ancient, dark legends spoke of a great day of reckoning. Our ancestors used to live in a paradise, green and lit by the life-giving sun, where food was abundant and so was happiness. But we had committed a terrible sin, a sin that could never be washed clean. Because of that sin, the paradise above was destroyed. We were forced to escape, escape deep underground through paths that are now lost to memory, to hide our shame.
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Just to the south a series of tunnels led away from our cave, steeply heading downwards, even deeper. Ancient texts warned us not to explore those caves, talking of an ancient evil that could be awakened by any excursion down there. Those tunnels were known as the Sealed Corridors.