I saw this mentioned in passing on a
Geoff Lawton video.
Did some digging but found very little info out there online.
It is a slow growing, long lived, nut bearing pine tree
native to Australia. It appears hardy outside of it's native zone, but I've struggled to find evidence of it here in the UK. The nut/seeds are big and drop in cannon ball sized husks weighing up to 20lbs. Don't stand under them!
Seed supplier
They look really interesting for zone 5 food production.