I have lived in Worcestershire for well over half my life and have never see this strange tunnel running from the train station at Great Malvern to Malvern St James Independent School. Somebody had posted a historic photo of it recently on social media, and today trying to improve my fitness I walked past and decided to photograph it myself!
@shutterbug49 You can certainly walk in it and I would imagine you could ride a push bike through. I think it is still in use to allow students a covered walkway from the train station to their school. Historically the Malvern St James building used to be a hotel in Victorian times. It might date from then. I haven't investigated further!