Final answer:
The Running Fence art installation by Christo and Jeanne-Claude was made of nylon fabric and stretched across Sonoma and Marin counties in California, involving extensive preparation and leaving no permanent impact.
Step-by-step explanation:
In the piece Running Fence, nylon fabric was stretched on the rolling countryside of Sonoma and Marin counties in California. This installation art piece was created by Christo and Jeanne-Claude, and spanned nearly forty kilometers from Highway 101 to the Pacific Ocean, on private property. Running Fence was a major endeavor, composed of 200,000 square meters of nylon fabric and held up by 2,050 steel poles supporting the cables. Preparation for this massive artwork took forty-two months and involved collaboration with ranchers, multiple public hearings, extensive environmental impact reports, and legal sessions. Notably, the installation had built-in passageways for cars, cattle, and wildlife, demonstrating the artists' considerations for environmental and community aspects. After gracing the California landscape for two weeks, the entire project was dismantled without leaving any permanent residue or impact on the land.