The South Island's Mt Hutt skifield is reminding parents and caregivers to supervise their children after a child slipped from a chairlift on Sunday afternoon.
The boy was held for a time by an adult and dangled for two minutes while rescuers rushed to the slopebelow.
They used safety pads to create a makeshift net, and the boy was safely caught after falling.
Mt Hutt Ski area manager James McKenzie said the boy appeared to have wriggled out of the new eight-seater chair's safety bar.
"The child was riding a lift with two other children and an adult and the adult has told us that the child had successfully sat correctly on the chair," he told Morning Report.
"But at some point there's been a bit of manoeuvring as the safety bars come down and the child has managed to twist his body - the safety bar has come down between their legs as a foot rest - and the child has managed to swivel their legs to the side and, at that point, the child has started to slip."
McKenzie said such incidents were rare and the new chairlift was not that different from other older chair lifts.