A giant hole has opened up in the ocean and it’s hiding a terrifying truth

The Great Blue Hole off the coast of Belize is one of the world’s most peculiar features and scientists have just made a terrifying prediction about the world's future because of it. Measuring 300 metres (984 feet) across and around 125 metres (410 feet) deep, it formed at the end of the last Ice Age when rising seawater flooded a series of massive caverns. The Great Blue hole lies around 60 miles…