"I never spoke about the Holocaust for over 55 years - I just couldn't talk about it. My wife died 12 years ago - I never even told her the horrors I went through."
These are the words of Tomi Reichental - one of three remaining survivors of Hitler's mass extermination plan for the Jews - now living in Ireland.
The 79-year-old joined Suzi Diamond and Jan Kaminski, who also survived the death camp nightmare, to lead a special commemoration service in Dublin.
They were joined by politicians and religious leaders at the annual Holocaust Memorial Day at the Mansion House in Dublin.
Recalling the nightmare images of those times, Mr Reichental, who has lived in Ireland for the past 55 years, said that when his grandmother died her body was "picked up and thrown on a cart."
"It was then thrown on a pile of corpses outside the camp. It's something I have to take with me to the grave. I will never forget that picture in my mind.
"I was nine years old at the time. It was so inhuman and barbaric, but at the time it was part of life."
Diseased, dying people were everywhere, he said, and many were so skeletal it was unclear if they were men or women.
All around the stench of burning flesh from the crematoria suffocated the air.
Mr Reichental, a survivor of the notorious Bergen-Belsen concentration camp, said the "horrors" of the times will forever remain seared in his memory.
Speaking to Independent.ie, he said one "joyful image" he carries with him is the moment a British army unit rolled into their camp and told the inmates ''you are now free."
"The came into the camp and shouted through a loudhailer 'this is the British army, you are being liberated,’ he said.
"We didn't know what the word meant at the time, but we knew that we were free.
"What we experienced was hell on earth."
He warned that humanity must always be on guard against a repeat of murderous racism.
"We must never forget what happened in the decades to come. I live by the motto 'make peace with the past, so it won't spoil the present.'"
He also spoke out against the rise of anti-Semitism in Europe, adding that recession in Ireland has marked the return of "racism" in Ireland.
"It is happening all the time. When the economy isn't doing well, people tend to blame other people," he said.
"Today it is not the Jews getting blamed - but some foreign people are being targeted by hooligans.
"They say they are taking the jobs away from Irish people, and it is very worrying."
International Holocaust Day saw a scroll of names read out list family members of Irish people who died in the Holocaust.
There were solemn prayers and the oft-repeated warnings to never let such horrors happen again.
President Michael D Higgins, Justice Minister Frances Fitzgerald, and Minister for Foreign Affairs Charles Flanagan, were among those who paid tribute to the victims during an evening of music, poetry and shared memory.
Six candles in remembrance of the six million Jews who perished were lit by descendants and relatives.