Position is roughly 722/64/3363 that large one and the few small ones directly around it.
Thanks =)
I can't officially give you any land, But I do think you should know we're probably resetting the map when the update comes.
Marker has been added. And, Hippiecheese is right. In the next month or two will be a world reset due to new features of map generation of 1.13. It's totally going to be worth it.