Chennai's Hidden WWII Air-Raid Shelters Discovered

In Chennai, India, there are secret underground rooms that were built during World War II to protect people from air raids.

These rooms are very strong, with walls that are 16 inches thick.

A man named Ramesh Kumar, who works at a company that took over the factory where these rooms are located, remembers stories from his grandfather about how people would run to these shelters when they heard the air-raid siren.

Most of the time, it was just a practice, but it was important for people to be ready.

Now, these shelters are used as storage rooms.