The location of the theft was narrowed down to the area around an old abandoned village called Kgatlane on the Vaal near the Orange River in South Africa.

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Only the affluent boroughs of Richmond and Kingston along the river to the west prevent the completion of the orange doughnut.

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We sat on the river bank with Sudanese families to watch the sunset, then walked streets that were illuminated by the glowing orange coals under curbside tea sellers' water pots.

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