SAN FRANCISCO (CBS SF) — A grimy piece of artwork hanging in BART’s Embarcadero Station for nearly four decades is coming down.

The 50-foot-tall, 7,000-pound macrame sculpture called “Legs” has been hanging on the east wall since 1978.

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Originally¬†white and orange in color, the knotted ropes are now barely noticeable due to being covered by dust from BART’s brakes and outside pollution.

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Early next week, workers will start removing the massive sculpture using detailed instructions from the artist. BART has budgeted $300,000 to break down the sculpture and deliver it to its creator, 84-year-old textile artist Barbara Shawcroft who lives in Davis.

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There are no plans for BART to replace the wall with new artwork. Instead it will be left barren and used for maintenance access.