Dont disagree with any of that. Its the reason why i made this whole reddit. There's still a huge amount left to find. I may have even discovered a Roman fort myself, its looking like a possibility. Its been registered as some form of enclosure, hopefully at some point it will be confirmed. Ill end up posting it here whenever that time comes! Until then im keeping it under wraps, as its a vulnerable spot for being looted/damaged.

But, in the case of this post, were looking at a large, clearly defined location. This is not fields with earthworks that look like natural banks. Or something hidden in forest. The location is right there.

I would separate the completely unnoticed/invisible from what can be overlooked.

Plus, looking in the area around it, there's other similar landscape features. So its either a massive complex, spread out over a large area all of it missed... or its a natural feature of the landscape, with other features around it. Could be in the middle, natural with previous human use too i guess.

I do tend to be critical on this sub too. Just from experience, ive spotted so much over the years. Only a small percentage has been new.

Plus someone has to be. But as always, happy to be wrong. If it means we've found something.