Alex realized after some time that he didn't know where he was. Judging by the strength of the beasts he had to constantly fight throughout the night, there was no way he was anywhere close to where he had left from.
The Prison Walls had thrown him somewhere else on the continent after dragging him around for hours on end.
Since it was still nighttime, Alex decided to wait until it was day before deciding where he wanted to go. He didn't want to walk too far in the wrong direction.
He had long since left behind the fighting pit of beasts, but even so, beasts seemed to be constantly crawling out around him, even multiple ones at once trying to get to him.
Alex was surprised at first at how often it was happening, but then he realized that it might have been the result of the Sunhearts he carried.