South of the city of Bath is a cycle route which incorporates two former railway tunnels. We’ve cycled through them before (when I didn’t take a camera) but we went again a few days ago with two friends. Both tunnels have some lighting, and one of them has movement-sensitive music and illuminated speakers. A nice, reasonably easy, 13-mile round trip, returning to Bath via the Kennet and Avon canal. www.sustrans.org.uk.

Illuminated speaker.

Illuminated speaker.

Location of speaker. Flash used to show more than is usually visible.

Sal and friends leaving tunnel.