Passage: The tomb of Hor-Aha is located in the necropolis of the kings of the 1st Dynasty at Abydos, known as the Umm el-Qa'ab. It comprises three large chambers (designated B10, B15, and B19), which are directly adjacent to Narmer's tomb. The chambers are rectangular, directly dug in the desert floor, their walls lined with mud bricks.

Question: What shape were the chambers of the tomb of Hor-Aha?
rectangular