Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Salisbury_Cathedral%2C_roof_space_over_nave.jpg/220px-Salisbury_Cathedral%2C_roof_space_over_nave.jpg
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Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Salisbury_Cathedral%2C_roof_space_over_nave.jpg/220px-Salisbury_Cathedral%2C_roof_space_over_nave.jpg