The story, which was also published on the NZ Herald website, was shared 22,000 times across Facebook and received 72 comments from readers - fascinated and horrified.
Michelle Eaton said: "This is truly amazing. I'm not a fan of spiders but what a beautiful creature.
"I must admit would be a tiny bit scared if he was on my shoulder lol.
"I'm happy they live underground, great photo though, thanks for sharing."
Penzme said: "I remember you from 40 years ago ... as a kid we used to find them under the rocks in my neighbours garden. But this is the biggest I've seen."
Hine Mitchell said: "Got to see a doco on these, absolutely amazing creature, I just love Aotearoa."
Griff Griff said: "I had one crawl up my leg when I was digging over an old garden in Huia. I don't know what made me look down but when I flicked it off I did swear a lot.
"Some said I made a girly screeching noise, but I'm sure it was far more manly than that. I decided to go and have a beer and give the spider a chance to move on before going back to the garden with my trousers tucked tightly into my socks."
Teeps said: "Forget the mortein how bout a spade?
"I know its one of gods creations but EEEK."