A truck carrying more than 700kg of ammunition has crashed, causing a State Highway to close for more than three hours.
State Highway 1 between Taupo and Turangi was closed after a truck's trailer unit flipped just after 12pm.
Traffic was diverted around the western side of Lake Taupo.
Taupo Fire Brigade acting station officer Gary Balment said the truck and trailer unit had been carrying foodstuffs and 760kg of shotgun cartridges.
Some of the boxes had broken open but everything police and firefighters secured the scene.