A plaque at the nearby hypocentre gives the following account and statistics of the damage caused that day.
“At 11:02 A.M., August 9, 1945 an atomic bomb exploded 500 meters above this spot. The black stone monolith marks the hypocenter.
The fierce blast wind, heat rays reaching several thousand degrees and deadly radiation generated by the explosion crushed, burned, and killed everything in sight and reduced this entire area to a barren field of rubble.
About one-third of Nagasaki City was destroyed and 150,000 people killed or injured and it was said at the time that this area would be devoid of vegetation for 75 years. Now, the hypocenter remains as an international peace park and a symbol of the aspiration for world harmony.”