That place is called the Blessed Place. It rises from the ocean and will sleep on the bottom of the sea, leaving only a faint cry that is still vaguely remembered by people. From its rise to its peak to its decline, it disappeared into history like all ancient civilizations.
When that civilization existed, the scribes who recorded history would more or less mention the darkness that had always shrouded them. People are enslaved by beings higher than themselves and live in misery. Only occasionally when the old rulers were resting underground, humans could barely see a few glimmers of light. Those were prosperous and beautiful dynasties, which was a little comfort compared to the long darkness behind them.