Within a year of "Wrapped Coast", Christo began work on "Valley Curtain": an orange curtain of fabric to be hung across the mountainous Colorado State Highway 325. They simultaneously worked on "Wrapped Walk Ways" (Tokyo and Holland) and "Wrapped Island" (South Pacific), neither of which came to fruition. The artists formed a corporation to benefit from tax and other liabilities, a form they used for later projects. Following a failed attempt to mount the curtain in late 1971, a new engineer and builder-contractor raised the fabric in August 1972. The work only stood for 28 hours before the wind again destroyed the fabric. This work, their most expensive to date and first to involve construction workers, was captured in a documentary by David and Albert Maysles. "Christo's Valley Curtain" was nominated for Best Documentary Short in the 1974 Academy Awards. The Maysles would film many of the artists' later projects.