Up and down, up and down. All day, every day.

From the base of a stone quarry, inmates of the Mauthausen concentration camp in Austria were compelled by Nazis during the Holocaust to climb 186 steps to the top, lugging boulders that would be used for German state construction projects.

Among those forced to take part in this sadistic form of slave labor was Edward Mosberg.

Holocaust survivor Edward Mosberg made his first trip to USC Shoah Foundation last week to learn about the Institute’s work, screen the new documentary in which he is featured, and make a special donation to Institute founder Steven Spielberg.