North Korea on Thursday conducted exercises with over a hundred pieces of heavy artillery, ruling party organ the Rodong Sinmun reported on Friday.

Rodong did not mention where the training took place, but evidence in the article suggests it might have happened on the Kalma Peninsula, Wonsan, the same area where the North conducted artillery training in March.

“The ground shattered as the earthquake hit it, the sky roared with the sound of thunder, and the cloud of dust soon covered the artillery emplacement,” Rodong reported.

“At the target island, the fire has erupted with the thunderous noise and the gust