A tramper has been rescued from the Hunua Ranges near Auckland with concussion and deep cuts to his head just days after another man survived a four-day ordeal in the area.
In the latest incident, the man in his 20s was on an overnight tramp on Thursday when he fell more than 2m into a river, hitting his head on rocks on the way down.
He suffered concussion, "severe lacerations" and bruising, but initially decided to try and sleep it off, said Auckland Westpac Rescue Helicopter crew chief Herby Barnes.
The following day the man walked out of the bush and contacted emergency services from his cell phone.
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When rescue helicopter staff arrived at 11am on Friday he was found asleep in his sleeping bag, in "an altered state" said Mr Barnes.
The man was flown to Auckland City Hospital.
The incident happened three days after experienced tramper Ronnie Fong was found after a four-day ordeal in the same area.
The 39-year-old Aucklander got lost during a half-day tramp and spent three nights in the bush before he was found in the southern part of the ranges on the evening of June 19.
He had lost weight and suffered cuts to his legs and damage to his feet that stayed wet during the four days, but was otherwise uninjured.
Mountain Safety Council chief executive Darryl Carpenter urged trampers to make sure they were prepared before leaving home by giving someone written details of trip plans and when to raise the alarm.
It was also important to be aware of weather conditions, know your limits and take enough supplies including food, clothing and emergency equipment, he said.