A World War 2 Type 22 pillbox at the northern end (near the car park) of Hornchurch Country Park, London. The park used to be the RAF Hornchurch airfield, hence the defences in this area.
EDOBID: e03957
https://en.wikipedia.org/wiki/Hornchurch_Country_Park https://en.wikipedia.org/wiki/RAF_Hornchurch
638 photos taken in November 2021 with a Sony a7R III and processed in Reality Capture.