noun
east wall; east face (of a mountain)
Refers to the eastern wall of a building or the eastern face of a mountain. Used in both architectural and geographical contexts.
この寺の東壁には古い壁画が残っている。
An old mural remains on the east wall of this temple.
その山の東壁は険しい岩場になっている。
The east face of that mountain is a steep rocky area.