Chamber of Mazarbul

The name Mazarbul is never specifically interpreted, but the fact that this chamber is interchangeably described as the 'Chamber of Mazarbul' and the 'Chamber of Records' strongly implies that the Khuzdul word mazarbul can be read as meaning 'records'.

This plan is based on descriptions in the text of The Lord of the Rings, though there are some points of uncertainty. This is particularly true of the eastern staircase, of which all that we're directly told (in relation to the Chamber) is that it ran straight down from the eastern door. That might reasonably be taken as meaning that the stairway led away eastward from the door, but elsewhere it is said to have been unwaveringly straight, and to have led down to the Second Hall (which lay to the south). For all this to be true, the stairs must have run southward, not eastward, and so we assume here that the stairway ran parallel to the passageway on the other (western) side of the Chamber of Mazarbul.