Clearwell Caves 2024
Gloucestershire
Grade II Listed building, a rare example of a two-storey pillbox with a rooftop gun emplacement that was built in 1940 at the canal bridge opposite the gateway to Bonds Mill. The centre gives information on the local history and the canal restoration as well as books and maps for sale.
Operator: Cotswold Canals Trust
Address: The Gatehouse Bonds Mill Estate, Bristol Road Stonehouse Gloucestershire GL10 3RF
Sun 1300-1600. (Or whenever the Green Flag is flying, if not the window displays tell the story!) Visit website or facebook for more details.
The building formed part of a line of ‘Pill Box’ emplacements forming ‘Stop Line Green’ to defend Bristol and its aircraft factories and docks from a threatened invasion from the south-west. As a pillbox, the building was part of Bristol's outer defences against a wartime invasion. It was unique since it doubled up as a platform for an anti-aircraft gun mounted on the roof.
Bonds Mill once housed the Sperry Gyroscope Factory. After the war it was adapted for use as a gatehouse for the mill and lateer to include hydraulic controls for the bridge that crosses the canal.