If white walkers can't swim, why didn't Jon and their family all move to an island to live there? - Quora
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Game of Thrones season 7, episode 7: Does the White Walker's dragon breathe ice or fire? | TV & Radio | Showbiz & TV | Express.co.uk
Is Viserion the Ice Dragon a full White Walker or a Wight? Will this affect how he is defeated? - Quora
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