It is one of the largest tombs in the Valley, encompassing two complete burial chambers. The tomb has been open and known since antiquity. This tomb was originally built by Tausert, a queen and wife of Sethos II who would later rule Egypt as Pharaoh. Construction took place in four separate stages. The first phase shows Tausert as a queen; the second phase took place under the reign of ruler Siptah. Later, when Queen Tausert ascended the throne, she ordered changes in the tomb to reflect her royal stature.