Beverly Pepper (December 20, 1922-February 5, 2020) was an American artist known for her towering sculptures of steel, stone, iron, and earth.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Beverly_Pepper

Toro by Beverly Pepper
1962 / Steel and wood / 73-3/4″x47″x23″ / San Francisco Museum of Modern Art, CA

Beverly Pepper on Artnet: http://www.artnet.com/artists/beverly-pepper/

Further reading:
https://www.fondazioneprogettibeverlypepper.com/en/
https://news.artnet.com/art-world/beverly-pepper-obituary-1770933
https://magazine.artland.com/female-iconoclasts-beverly-pepper/
https://thewomensstudio.net/2020/09/24/beverly-pepper/