Hypostyle

[Sarah]

Resting upon columns; constructed by means of columns; --especially applied to the great hall at Karnak.

[Sarah]

In architecture, a hypostyle hall has a flat ceiling which is supported by columns, as in the Great Hypostyle Hall at Karnak. In this case the columns flanking the central avenue are of greater height than those of the side aisles, and this admits of openings in the wall above the smaller columns, through which light is admitted over the aisle roof, through clerestory windows.