It's one of the most horrific stories in human history. Of the six million people who were killed in World War two, more than a million were murdered in just one place - Auschwitz.
In order to show today's teenagers the extent of what happened there, the Holocaust Educational Trust took 200 students from schools across the Calendar region to Poland this week.
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Charlie Watkins took his own life last year.
What has the rest of the week got in store for us?