The pillbox is set on two acres of green belt land
A World War II guard post hidden away in Cambridgeshire woodland has sold at auction for £55,000.
The 60-year-old pillbox, near Great Shelford, was used as a vantage point for soldiers to keep watch over Cambridge in case of enemy attack.
It has no central heating or windows and the front door is only 3ft (36in) high, but the property comes with two acres of woodland.
It had been expected to fetch up to £20,000 at Cheffins auction house.
The bunker and surrounding land was put on the market by a man from Kent, who inherited it from his grandfather.
Pillboxes were dug-in guard posts, often camouflaged to hide their locations.
Cheffins director Simon Gooderham said: "It's not a piece of land that can be developed. It's in the greenbelt, so building is not allowed.
"But for people who love the outdoors, and who want to have somewhere of their own in the countryside that they can walk through and where they can enjoy nature, it's a lovely spot."