The Serpent Dungeon
The Secret Passageway

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Stepping into the narrow passageway, you find yourself in a corridor barely wide enough for two people to stand side by side.
The walls here are rough-cut stone, mostly covered in a thin layer of green algae — though they feel dry to the touch. Spider webs fill the corners and drape across the ceiling, thick in places and almost invisible in others. Here and there on the floor, bits of fur and the small bones of giant rats lie where something left them.
The corridor stretches ahead in the dark, lit only by what light you carry with you.