The pillbox differs from the others due to its partial brick cladding.
Theres also a very large entrance with metal posts and some large concrete blocks adjacent.
S number relates to ADS reference ID on Defence of Britain database
Pillbox S0005914, South Gare, Redcar
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Have you been to the pillbox on Cattersey Sands near Skinningrove? I took a picture of it at low tide, but I must have been 1/2 a mile away, cos i was paddling. Plus I know you take photos mainly around Teeside but there are some faboublous wartime relics further south around Skipsea, Withernsea and Spurn Point in East Yorkshire.