Notes From the Underground

Catacombs decorated with bones in Rome, an underground reservoir in Istanbul from the sixth century, a former subterranean city in northern France with hundreds of rooms, chapels, town squares, and a bakery. In a recent National Geographic article, nine different historic sites around Europe that are located underground are rediscovered. Consider what strange activities might be unfolding at any given moment right under your feet. Write a story that takes place in an underground location. Have historical sites been repurposed for an entirely new function, or has something new been built? Is the atmosphere lively and bustling, or cool and foreboding?