Allan has some excellent videos showing bottom-up obstructions of a distant island over water. Here is one such video:
Here is a still from the video where the island is partially obstructed. Or, maybe, if the earth is flat, the island is flooded.

I have commented on this video:


I anxiously await his response.

Rather than address my questions, Allan got scared and banned everyone from his channel that is critical. The comments from my “MC Two n” account are no longer visible.