Headwall. Landform. Steep slope or cliffs above gentler slopes (often scree slopes) and ending at the skyline. Usually in the mountains at the head of a valley, hence the name "head" wall, and usually formed by glaciers. Can be used to describe any steeper wall above gentler slopes, but usually restricted to cliffs leading to the skyline.

Happy hiking! All distances, elevations, and other facts are approximate.
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