Ahead of the 75 anniversary of the liberation of the Nazi concentration camp at Auschwitz, survivors have been talking about their memories three quarters of a century on.
Joe Davies reports.
'I stayed alive to tell': Auschwitz's dwindling survivors recount the horror
(SOUNDBITE) (English) VERA KRIEGEL GROSSMAN, AUSCHWITZ-BIRKENAU SURVIVOR, SAYING: "The hate of the past is forever spreading, like wildfire in the field.
No lesson has been learned and hate is on its stampede." Tattooed on her arm, Vera Kriegel Grossman still has the number to show for it.
She's one of a dwindling number of people who survived the Nazi concentration camp at Aushwitz.
Aged six, Vera and her twin sister were subjected to the pseudo-medical experiments of doctor Josef Mengele.
His terrifying and grotesque practices, earning him the name "Angel of Death".
(SOUNDBITE) (English) VERA KRIEGEL GROSSMAN, AUSCHWITZ-BIRKENAU SURVIVOR, SAYING: "I won against all odds.
I am here.
Look at me.
I am here".
We filmed her as she told her stories to a group of guides from a Holocaust memorial museum.
Stories of how she was kept naked in a cage, given painful injections into her spine, and stories of how she was beaten if she cried as she saw other children suffer and die.
Many did.
Six million Jews were killed in the Holocaust - six million Jews who never lived to provide first-hand testimony to the atrocities of the Nazis.
Ninety-five-year-old Avraham Harshalom is another of the lucky few who did survive.
And as the 75th anniversary of the camp's liberation approaches, he's keen that stories like his aren't forgotten.
(SOUNDBITE) (English) AVRAHAM HARSHALOM, AUSCHWITZ-BIRKENAU SURVIVOR, SAYING: "In the first, let's say, 20 years after the war, all Holocaust survivors and especially prisoners of Auschwitz were not talking at all, you know.
We were not talking because people didn't believe us that what we are telling is true and second, they start to ask questions: 'Listen, if everything (was) so bad, how you survived?'
And the story of surviving is really a very complicated story which every one of us has his own story how he survived." On his arm, a scar where his prisoner number was tattooed before he had it removed.
He now keeps it in a frame on a shelf in his living room.
(SOUNDBITE) (English) AVRAHAM HARSHALOM, AUSCHWITZ-BIRKENAU SURVIVOR, SAYING: "My number, everyone was asking what is it, they didn't know what it is, you know, a man with a number.
And then I decided by the first possibility to take out the number."