The apparent purpose of this unusually high gallows can be understood from the geography of Shushan: Haman's house (where the pole was located) was likely in the city of Susa (a flat area), while the royal citadel and palace were located on a mound about 15 meters higher than the city. Such a tall pole would have allowed Haman to observe Mordecai's corpse while dining in the royal palace, had his plans worked as intended.[12]