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Eternal problem

I found last week's article about the Segovia aqueduct very interesting, but note that some things do not change. A close inspection of your photograph will confirm that, at the right hand end, at the base of the top tier of arches, the Roman engineer had to carry out some remedial works. (The additional layer of stone used to surcharge the top of the underlying arches.)

Alex Perry (G), 4 Claremont Court, St James Road, Surbiton, Surrey, KT6 4QP.

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