cliff, balcony, staircase, rockface, stairway, stairwell, stairs, serac, elevator shaft, doorway, window sill, seracs, boulder, bannister, crevice, parapet, riverbank, railing, banister, gunwale, cornice, snowfield, ravine, crag, walkway, embankment, rafter, spiral staircase, ladders, rope, corrie, snowbank, belaying, drainpipe, trapdoor, rappel, gunnel, couloir, windowsill, bluff, knoll, precipices, timberline, feet, deck, crevasse, rooftop, sidewalk, hummock, waterfall, perches, chute, scaffolding, handrail, sandbar, outcropping, gulch, guardrail, rocks, gangway, barricade, nuptse, bivvy, creek bed, wall, gorge, porch, companionway, rimrock, slope, gangplank, shute, crampon, headfirst, piton, bunny slope, abseil, tree trunk, creek, balustrade, promontory, juniper bush, hemlock tree, ridge, pedestal, battlement, hatchway, footbridge, scree, longs peak, skylight, alcove, huck, retaining wall, hill, overpass, prow, hillside, mineshaft, horseshoe falls, posthole, terrace, ledges, sill, shelf, plank, reef, gully, stair, bottom, hull, seam, berm, crotch, cubical, guillotine, hatch, ice, roughhewn, serpentine, socket, winch, asteroid, bakelite, basement, beaten, bridge, broadening, brush, craggy, darkened, degenerate, dusty

berm, dangerously, hand truck, thriftily, truck

ridge

shelf