k thanks the ocd in me makes me want to know what is in that crater

I'm pretty sure that's where Waerloga the Dragon Lord is imprisoned. It's a Wild land, but unimplemented (a lot of them are buggy). If you build a city close by and expanding it enough (for the sight), you'll be able to see him sitting on his dragon wearing all kinds of cool gear.

Edit: Bah, should have read more.

Its going to be a blockage in releases where the quest is available anyways, its kind of sad you cant win by quests ATM... but I think it will always be a blockage in the world, and that is the reason to include it, because at the time any player can enter and defeat the guardians, the player will WIN the game.

Sincerely
~ Kongdej

no you can win by quests i did it last night you do the dragon statue quests and you fight that dragon born guy.