There was no obstruction at the periphery of the camp. In such a place, if the magical beasts deliberately attacked, it would be useless no matter how high the fence was. However, at the entrance of the camp, they still used some large rocks to pile up a wall that was more than two meters tall to stop some low-level magical beasts that lived in groups.
However, this was the temporary home of all adventurers in the Magical Beast Forest. Once a Magical Beast attacked, the mercenaries or adventurers in the camp would gather together to protect it and not let the Magical Beasts trample on it.