Secret doors on the M5 are barely visible to motorists but they have a special purpose.
Full ArticleThe mysterious 'secret' M5 doorways hidden between the Black Country and Bromsgrove
Tamworth Herald
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In pictures: See 'secret' hidden doors on the M5 around Birmingham and Black Country
Photos show the M5's carefully hidden doorways on the West Midlands stretch of motorway
Tamworth Herald