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Safety board, hard hats are a must.
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Looking up is prohibited; debris can hit you.
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The view after taking the elevator 75 ft. straight down.
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The hole up to the ground.
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Unfinished water tunnel going for several miles.
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The tunnel is big enough for freight cars.
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Lots of machinery and the temperature stays in the 50's all year round.
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A freight car.
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Dirt belt.
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One of many workers called sandhogs who make a living working on NYC water projetcs.