among them are nearly 2,500 british teenagers who travelled with the holocaust educational trust, andducate others on their experiences. the bbc�*s emma—louise amanshia went with them. i can't believe that this was allowed to happen. it really surprises you, the scale of it. they thought they were i going somewhere where they would survive. now you just have these empty suitcases, and each individual. suitcase has a story. these gates behind me mark the entrance to auschwitz, the largest concentration camp ever created by the nazis. jewish people from all over europe were brought here on trains during the holocaust. and around a million of those people were killed here by the nazis. i've joined 150 teenagers from the uk who have come to auschwitz—birkenau to find out more about the history of the holocaust. it was such a shocking event in human history, and just to be able to connect with the people who all had lives, they all had beliefs, they all had aspirations in life. it's really important to important to connect with those people and understand what they had to face. are there a

karen pollock, chief executive of the holocaust educational trust, is with me, as is james holland, ai historian. thank you both forjoining me on this hugely important day. karen, it is a day of such significance, notjust significance, not just remembering the significance, notjust remembering the thousands who died here but also remembering the survivors.— the survivors. absolutely, i don't think— the survivors. absolutely, i don't think we _ the survivors. absolutely, i don't think we can - don't think we can underestimate the significance of today and being here at auschwitz—birkenau. 80 years ago when the camps were liberated was the first time the world really became aware of really what was going on inside this place. for survivors, this date means that we, the world, and listening to them, hearing what happened to them, hearing what happened to them, hearing what happened to theirfamilies, their them, hearing what happened to their families, their loved ones that they have lost, brutally murdered by the nazis. with global leaders, with the king here, this really says, it sort o