So after I experienced a bug (which I cannot finish the arena battle), I quitted the hunt and I re-entered the hunt. Surprisingly, I spawned at the starting location of the desert temple (which was my first location of the original hunt), without any nether portals. When I reached the end of the temple (still thesame level, the desert temple), a door which ends the hunt appears, which means that there is only one level of the hunt which I re-entered.