Rogue tourists are being warned to heed local advice about weather conditions on the Tongariro Alpine Crossing.
The umbrella group of official guides working on the famous day walk says their efforts to keep visitors safe are being undermined by a small number of individuals who ignore expert advice and put their lives at risk.
"We are very pleased with the contribution the Tongariro Alpine Crossing Transport and Guide concessionaires group (TACTAG) is making to alpine safety," said its chairman Stewart Barclay.
"However, some visitors are not heeding the advice of our members and other experts and are attempting the Crossing when the weather is unsuitable and without appropriate clothing and equipment."
"The Crossing can be an extreme environment in wintertime with snow and ice and rapidly changing weather conditions."