Taupo police are investigating a serious assault and believe there are people who were in the area that could have vital information.
A group of New Year's Eve revellers had stopped to speak to another group at a picnic bench next to a parking area known as the Pits.
In a seemingly unprovoked attack, a man by the picnic bench was punched and knocked unconscious. The assault happened around 3am.
The 20-year-old man from Wellington was hospitalised with a head injury and is now recovering at home.
A number of people congregated around a parked white vehicle at the time of the assault, and police believe some will have witnessed the assault or will have information that might help identify the offender.