Original sentence: Indianapolis Catacombs are approximately 20,000 square feet of underground passageways on the northeast corner of Market and Delaware streets in downtown Indianapolis, Indiana.The original purpose of building the Indianapolis catacombs in the 1880s is presently unknown
Edited sentence: Among the thousands of people who crisscross the popular Indianapolis City Market, very few are aware that just beneath their feet are miles of interconnected tunnels, constructed more than a hundred years ago.In the market itself, you'll need to know who to ask — they are not open to the public, and visitors needs to schedule an appointment with a good reason to go down into the labyrinthine basement.More than a century later, many parts of the catacombs remain remarkably intact, while others are crumbling to their limestone foundations.Thanks to the preservation of the City Market, the Indianapolis catacombs are one of only a dozen or so catacomb sites that still exist in America.The 20,000 square-foot subterranean area stayed cooler than the streets above, so they were used to help preserve food for the entire market overnight, waiting to be brought back aboveground the next day.The Indianapolis Catacombs are approximately 20,000 square feet of underground passageways on the northeast corner of Market and Delaware streets in downtown Indianapolis, Indiana.They're not easy to access, but there are a few entry points.Tunneled beneath the city streets with limestone and brick archways, the catacombs were used to transport and store meats and produce to be sold in the market before the days of refrigeration