These rusty remnants made me think of tower buildings piled alongside one another. As the lower photo shows, they certainly aren’t that, though it could be a model of an old Soviet workers vacation development!
Tower blocks
Graham's Island
Life on the Big Island of Hawaii
Graham's Island 
How intriguing!
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An amazing find Graham
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Hawaii is a good place for rusty relics!
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Those were the days!
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I’d like to say long gone days, but I’m not so sure!
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Indeed!
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