There is an island near Italy that was the site of wars, a dumping ground for plague victims, and an insane asylum. It's considered so dangerously haunted that the Italian government does not allow public access.
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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18