Nearly 70 years after a U.S. atomic bomb laid waste to the city of Hiroshima, the attack continues to hold an important place in the psyche of its residents.

Every year, the ceremony commemorating the Aug. 6 bombing and the people who perished is the focus of the Hiroshima summer.

But as time passes and people who experienced the bombing firsthand grow fewer, the city is faced with the challenge of relating the scope of the tragedy to younger generations.