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In page Lincoln Cathedral:

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Other additions to the cathedral at this time included its elaborate carved screen and the 14th-century misericords, as was the Angel Choir. For a large part of the length of the cathedral, the walls have arches in relief with a second layer in front to give the illusion of a passageway along the wall. However the illusion does not work, as the stonemason, copying techniques from France, did not make the arches the correct length needed for the illusion to be effective.[citation needed]