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Sprinting forward, as the tunnel collapses behind you, you see an approaching light. Suddenly, the illumination is all around you, and you find yourself falling, spiraling through a gust of whirlwinds, until you ascertain your orientation. You see a floor approaching below you, and you deftly (but not quite painlessly) land in a crouching position. Glancing upwards, you realize you have fallen through some sort of chute. You surmise to yourself to be more careful about watching your footing, next time....
You are in a large library, of sorts, like the kind found in old mansions (complete with a ladder to reach upper levels of books). There is a desk in the middle of the room, with a stack of papers and folders toward the side of the marble top.