"People that were living close-by ran out with spades to help put the fire out. One of the nearby baches had a chilly bin of water and people were using it to soak sacks to use on the fire."
Rhys said there were baches at the bottom of the hill but most were only occupied during the summer holiday period.
"One of the bach owners was staying directly beneath the fire," Rhys said. "It's been quite windy here, so the fire spread out a bit."
New Zealand Fire communications said the incident was listed initially as a rubbish fire. Witnesses believe it had spread out of control.
Department of Conservation East Coast rural fire management officer Malcolm Smith attended a separate fire on Saturday, 4km away, but still in the Mahia district.
"Last summer we had predictions of a bad fire season but it was probably one of the quietest. So what's in front of us this year, that's the million dollar question. We just have to be ready and be prepared."