The pontoon will be used to unveil the new ‘Isis' sculpture which will reside on the Hyde Park lake's shore.
Access to the proposed site for Owen Brown's vehicles and heavy plant was impossible, and so the pontoon was built on the far side of the lake, where the structure was carefully constructed on top of it.
Both structure and pontoon were then floated across the lake into position.
The Royal Parks Foundation to hoping to finance the building of a new environmental education centre in the heart of Hyde Park.
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