A modern bridge spans the Oeiras river at Mertola, above the ruins of a Roman-era structure.

A modern bridge spans the Oeiras river at Mertola, above the ruins of a Roman-era structure.

A modern bridge spans the Oeiras river at Mertola, above the ruins of a Roman-era structure.

A modern bridge spans the Oeiras river at Mertola, above the ruins of a Roman-era structure.

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