the grate of brassThrough which they thrust me, open stood the while, […] The grate, as they departed to repass,With horrid clangour fell, and the far soundOf their retiring steps in the dense gloom was drowned.
1817 December, Percy Bysshe Shelley, “The Revolt of Islam. […]”, in [Mary] Shelley, editor, The Poetical Works of Percy Bysshe Shelley. […], volume I, London: Edward Moxon […], published 1839, page 211