Omanawa Falls is still packed with trespassers, with dozens of people at a time visiting the dangerous spot despite an official closure for safety reasons.
Tauranga City Council parks and recreation manager Warren Aitken said some people had tried to get past security guards hired to support contractors working in the tunnel at Omanawa.
"The security guards were there for three-and-a-half days, which was the duration of the project. It was effective in deterring people, most of whom were not locals."
However, Omanawa resident Warren Dawson said that during summer the number of trespassers accessing the falls outside those days had been greater than he expected. The small rural road that backs on to the access way had been "absolutely jam-packed" with up to 60 cars parked by the entrance.