Stock Photo - 02 September 2021, Berlin: Elke Büdenbender (2nd from left), wife of German President Steinmeier and Unicef patron, walks with Unicef volunteers from Potsdam and Berlin through a forest on the Havel River wearing hiking boots with blue laces at the start of the nationwide ""Walk4Unicef"" hiking campaign. In Germany, walking enthusiasts can take part in the campaign and turn the kilometres they walk into donations for Unicef's worldwide relief efforts. As a thank you for their commitment, all hikers will receive a pair of blue shoelaces for signing up. Photo: Soeren Stache/dpa-Zentralbild/dpa. - Berlin/Berlin/Germany

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