A spectacular sinkhole the length of two football fields and the depth of a six-story building has opened up on a New Zealand farm.
A worker stumbled upon the chasm before dawn when he was rounding up cows for milking on the farm near the North Island town of Rotorua.
It appeared after several days of heavy rainfall.
Farm manager Colin Tremain told Newshub television he didn’t realize just how big the hole was until he saw it in the daylight.
He says the area often develops sinkholes due to degrading limestone rock beneath the ground’s surface.
Vulcanologist Brad Scott told Newshub that the sinkhole was three times larger than any he’d seen before. He says an underground cavity would have developed over decades.
Tremain says he’s planning to install a fence so livestock don’t fall into the sinkhole.
He added: “It wasn’t until I came down in daylight that I actually saw just how big it was.”
“We’ll keep it fenced off as it is to keep stock out, although stock aren’t stupid, they’re not going to walk into a hole, they can spot danger.”
A sinkhole is a large hole that opens up suddenly in the ground — and most times they catch people totally unaware.
They are usually caused by erosion under the ground’s surface that is due to a poor drainage of water.
Sinkholes have been known to be just a couple of feet across but can also be so big that they swallow up cars and buildings.
The deepest sinkhole to have ever formed is in the Chongqing district of China. It is 2,171 feet deep and 6,735 feet wide.
Source: Read Full Article