A tragedy has been predicted if Tauranga City Council does not do more to stop people risking their lives to reach the bottom of the scenic Omanawa Falls.
Geoff Nijhuis, caretaker of the adjacent Omanawa Falls underground power station, feared the next person to fall would go home in a body bag.
He was responding to Saturday's accident in which a 38-year-old man and his 12-year-old son were badly injured when they fell down a steep hillside trying to get around the locked metal door at the top of the tunnel that led to the powerhouse.
Mr Nijhuis was at the scene of the accident and spoke to the man's other son, who told him his father and brother were leaving the falls when they came to grief.
They had decided to take a shortcut by climbing up to the viewing platform at the entrance to the power station and then going up the tunnel to the metal gate, he said. There was a little portal by the door, which they climbed through, emerging at a rock face. As they were straddling the bluff to get around the door, the boy slipped and they both fell as the father reached to stop him.