Focus on The Arch 1979–1980 and discuss the Comment of the artist.
In a 1980 interview Moore said that "After the 1978 exhibition at the Serpentine Gallery in London, in which several large pieces were located in Kensington Gardens, there was a request for me to leave a sculpture there permanently, which I agreed to do. 
I thought the Large Arch was very naturally sited, particularly as it could be seen reflected in the water from across the lake. 
During the exhibition, many people believed the sculpture to be made of marble, but in fact it was a fibreglass exhibition cast made originally for my exhibition at the Forte di Belvedere in Florence (1963), because of the difficulty of getting a very heavy bronze or marble on to the site. Therefore, so that it could be left as a permanent sculpture in Kensington Gardens, I produced a version in travertine marble which is a very lasting material."
Large Arch London Kensington Gardens