Spoiler A Curious Map Sighting

[Cyg]

The in-game map looks very similar to the site map, still nothing in that area. I agree there is something there, though, cuz that's where the big cloud mass is. The thing on the stone tablet map could be a compass or something, but I think it's a round type final dungeon. Maybe it's the Tower of the Gods.

Here are a couple of overlays:

Using Skyloft as the matching point:
View attachment 19284

Using the Sealed Grounds landing spot as the matching point:
View attachment 19285

You know what is quite interesting with this? The mysterious spot is right next to the bridge area with the Hylian Crest. That spot we know will have MAJOR story points, and I think the usual story twist (ie, the twist done after you complete the first few dungeons) will occur there.