Bladevow Region.
John's destination—Starfall Mountain Range—was pretty sizable, but not too vast, covering roughly 130 kilometers of radius, which would be around 53,000-kilometer square.
From the borders of this mountain range to the nearest human settlement, it was 50 - 70 kilometers in distance on three sides.
Each of those settlements was made up of three kingdoms in East, South, and West. In the North was a river-streaked forest and the Kingdom ahead of it didn't come to get the benefits of the Starfall Mountain Range as they had another zone.
But Starfall Mountain Range was one of the areas rich with high-ranking resources up to King-rank, so the Haizek Kingdom in the East, and the other two Kingdoms would explore the peripheries regularly without going too deep unless they had local sects or ruling sects' branches' King-rank Tamers came with them.