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Explanation - An employee explains the workings of one of the reactors to journalists.

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Animal life - A visitor captures a butterfly resting on his glove, inside one of the reactor rooms.

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Scary stuff - Journalists walk through a corridor at reactor number three.

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Travel back to 1986 - A view of the control room for reactor three. Everything looks almost exactly as it would have done back in 1986.

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High risk - A worker measures the radiation levels near reactor four, where the deadly explosion happened.

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Back to the past - An employee and a journalist emerge from one of the haunting corridors in reactor three.

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Control panel - Details from the control panel of reactor three, which today looks almost rudimentary.

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Ghost town - An abandoned house in the town of Zalesye, close to the Chernobyl Power Plant, is almost hidden from view by dense vegetation.

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Historic controls - The control panel was used to operate Chernobyl's reactor three.

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Maximum level precaution - Employees clear away the radioactive dust that still lingers in the area.

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Tourist destination - Thirty three years after the accident, the power plant has become a popular tourist destination.

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Control room - A telephone sits ominously in the control room of reactor three.

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Real life horror - An employee passes through one of the dimly-lit corridors in reactor three.

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Secure confinement - This is the New Safe Confinement, a metal structure that has recently been built over reactor four. It covers the original "sarcophagus," which was constructed around the reactor to limit radioactive radiation in the aftermath of the explosion in 1986.

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Extreme care - A lorry spreads water over the tarmac. This prevents nuclear dust from being spread by the wind to surrounding areas.

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Terrifying trip - An employee surveys the group, appropriately clad in hat, face mask, a full coat, and shoe covers.

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Radiation room - In front of a crowd of expectant journalists, a worker measures the radiation levels in the room.

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Old corridors - Heavily-equipped workers are spotted walking through another eerie corridor in reactor three.

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Guided tour - An employee leads the journalists through the facilities of the power plant's reactor three.

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Worthy of fiction - Detailed parts of the control panel for reactor three are shown to the cameras.

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Eerie - Chernobyl's eerie atmosphere is attracting visitors from far and wide.

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Friendly canines - Stray dogs roam around the plant, with the New Safe Confinement looming behind them.

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New confinement -

A bus transports workers to the new confinement zone, where clean-up projects on reactor four are on-going.

See also: Chernobyl nuclear disaster: meet the Ukrainian ghost city. 

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