Readers Queries: Old Town tunnel puzzle

GUTTERING in an Old Town tunnel has left one reader stumped. If you can help, get in touch via the addresses below.

Q: Mrs Jacky Perry writes: “Every morning on the way to work I pass through the tunnel from the Royal Mile to St John’s Street and have noticed that only the gutter on the right-hand side under the tunnel is metal. I have been trying to find out why, with not much success.

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“It’s now becoming very frustrating.”