I recently traveled the areas and thought, other RPG games have those many lots of NPC around in the area, and many servers such as Indy do not have lots, let's say, few spawn of whatever creature.
There could be Grave Robbers or Ruin plunderers that spawn whereever there were old villages - they indicate where to investigate to find old ruins / old deeds !
They could be killed ofc, get XP from them, same as any other mob.