What Lies Beneath

Beneath the streets of San Francisco lay the remains of dozens of old ships left over from the Gold Rush in the mid-1800s. The ships transported prospectors hurrying to California, but eventually most were abandoned and buried under landfill as the city grew. Write a short story in which something monumental, such as abandoned vessels, secret documents, or mysterious remains, lies beneath the streets of the city. Which character becomes privy to this once hidden information? How can you be experimental or playful with the evocative image of a city built on top of layers of history?