Moscow Mayor Sergei Sobyanin, foreground, and Deputy Mayor for Housing, Utilities and Amenities Pyotr Biryukov, left, visit the Gorodnya River Valley Park in Moscow's South Administrative District.

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Laying a stone pathway in the Gorodnya River Valley Park in Moscow's South Administrative District.

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Landscape maintenance works in the Gorodnya River Valley Park in Moscow's South Administrative District.

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