27 July 2021, North Rhine-Westphalia, Leverkusen: Emergency vehicles of the fire brigade stand not far from an access road to the Chempark over which a dark cloud of smoke is rising. After an explosion, fire brigade, rescue forces and police are currently in large-scale operation, the police explained. Due to the damage, the busy A1 motorway near Leverkusen has been closed. Photo: Oliver Berg/dpa (Photo by Oliver Berg/picture alliance via Getty Images)