scarp

jyrkkä rinne the steep artificial slope below a fort's parapet
puhekieltä a cliff at the edge of a plateau or ridge caused by erosion; the steeper side of an escarpment
2014, (w), Blessed. Cursed. Claimed., National Geographic (December 2014)http://ngm.nationalgeographic.com/2014/12/pilgrim-roads/salopek-text

Sweating under the sun, we scale the barren eastern scarp of the Great Rift Valley (Area B), edging carefully around controversial, razor-wired Israeli settlements (Area C).

to scarp the face of a ditch or a rock

From scarped cliff and quarried stone

Sweep ruins from the scarped mountain