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Archaeology has lots of enemies. These are things that attack and destroy artifacts.
Most are microscopic, like bacteria or rust. Some are invisible, like wind and earthquakes. Some are human. Looters and vandals have been ruining sites since at least the time of ancient Egypt.
Good thing Earth has a few “safe houses.” These are places where artifacts have lasted for thousands of years. They’re too hot, cold, or dry for bacteria. The objects are protected from wind and waves. Earthquakes, volcanoes, and hurricanes can’t get at them, and humans can’t either.
Where are these safe havens?