Britain is a land of rolling hills, rugged moors and spectacular coastline, which millions of us enjoy exploring.
But some of these idyllic spots hide potentially explosive secrets.
Every year, unsuspecting members of the public stumble upon dozens of undetonated shells and bombs, most dating back to World War II.
So what happened in these remote places during the war? And how much do we know about the people who lived and worked there? … … …