Whether you call it a Halo, the Halo Rings, or the Halo Array, there's no denying the destructive power of these world-sized superweapons.
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Biggest abandoned megaprojects in the world
Explore the biggest abandoned megaprojects in the world, from an abandoned Japanese island with a dark past to a towering abandoned skyscraper in Venezuela. 0:00 Biggest Abandoned Megaprojects in the ...
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