Colin Tremain next to the sinkhole

Colin Tremain next to the sinkhole
A giant sinkhole has opened up on a farm near Rotorua following Sunday's record breaking rainfall in the region.

The sinkhole, or tomo, was about 200 metres long, 30m wide and 20m deep, farm manager Colin Tremain said.

It runs along a fault-line at the Tumunui farm and was discovered by one of the farm's staff, who went out to get the cows first thing on Monday morning.

It's the ninth serious tomo that has been on the farm that was at least 10m deep, Mr Tremain said.


Mr Tremain said he would put a fence around it because it was a waste of time trying to fill it in.

"There was one around the other side, I was watching it in the rain, huge amounts of water going in, it wasn't even filling up with water, it's just going straight out the bottom."
sinkhole new zealand
© DOMINICO ZAPATA/STUFF
Farm assistant Phillip Setters takes a look at the massive new sinkhole.
The tomo would get even bigger because there was already a crack which extended 400 to 500 metres through the property, Mr Tremain said.

The farm had 146 millimetres of rain over a 24 hour period on Sunday.

According to NIWA, Rotorua had its wettest hour on record with 51.8mm of rain falling between 10am and 11am on Sunday, with a total of 167.8mm of rain falling between 4am on Saturday and 6pm on Sunday.
sinkhole new zealand
© DOMINICO ZAPATA/STUFF
No animals or humans were harmed in the forming of this sinkhole.