Ceremony marks 70th anniversary of liberation of concentration camp in northern GermanyHolocaust survivors and government officials have gathered at the memorial site of the former concentration camp Bergen-Belsen in northern Germany, in a solemn ceremony to commemorate the liberation of the camp 70 years ago.The concentration camp was liberated on 15 April 1945 by British soldiers who found more than 10,000 dead bodies when they entered it.