In 1940 a network of defences was hastily built all over the British Isles to prevent an anticipated German invasion. The most common of these defences were called “pillboxes”, squat concrete forts that were sited at road junctions, canals and other strategic points. This is a Type 22 Pill Box – the most common design. It is a regular hexagon with walls approx 0.3m thick by 1.8m long. This one is located on Chapletown Road not too far from Turton Tower, Bolton. The Pill Box was strategically sited for use by the Home Guard in the Second World War to protect access to the largest reservoirs in the area and keep watch over Horrobin Mill, used for wartime storage.
Yep, that's just up the road from my childhood near the Last Drop Village hotel. I have several photos of it myself Lee, but none are as interesting as this capture of yours.