Eye-bolt's a box canyon, very short and steep-walled.    From Wordnik.com.  [Wizard and Glass]

The mod drifted down into the arms of a steep-walled valley.    From Wordnik.com.  [Catspaw]

To the right, it appeared to end in a cirque of steep-walled peaks.    From Wordnik.com.  [The Kinslayer Wars]

The bright lake was in a round, steep-walled valley on the very peak of a mountain.    From Wordnik.com.  [Wildfire] Reference

Up ahead, a desert plain appeared just beyond the mouth of the steep-walled, snakelike canyon.    From Wordnik.com.  [A Man Alone]

The ranges and ridges are interspersed with numerous steep-walled valleys, glaciers and fjords.    From Wordnik.com.  [Arctic Cordillera ecoregion (CEC)] Reference

Inside the steep-walled gorges, hikers walk, swim or rappel to ever more remote stretches of wilderness.    From Wordnik.com.  [A Wall Of Black Water] Reference

Beyond this steep-walled ridge, he knew, lay a stretch of the Khalkist Mountains that he had not yet explored.    From Wordnik.com.  [The Kinslayer Wars]

The sun was setting now behind the reefs, limning their karst topography of ragged peaks and steep-walled valleys.    From Wordnik.com.  [Dreamfall]

The bandits™ camp was well hidden, a cluster of hide tents covered in brush at the bottom of a steep-walled ravine.    From Wordnik.com.  [Chosen Of The Gods]

Then suddenly it turned parallel with the edge of a steep-walled gap, which came without warning, like the ha-ha of an.    From Wordnik.com.  [The Island of Doctor Moreau] Reference

River, but winds for sixty miles among the rugged and steep-walled mountains, terminating almost in the heart of the range.    From Wordnik.com.  [The Western United States A Geographical Reader] Reference

Instead of a fairly smooth surface, researchers say -- easy for me to say -- they saw towering bulges and steep-walled craters.    From Wordnik.com.  [CNN Transcript Jun 18, 2004] Reference

Here, the Delaware River has deeply entrenched into the glaciated Appalachian Plateau, creating cliffs and steep-walled valleys.    From Wordnik.com.  [Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)] Reference

Long before you reach the upper end you will begin to appreciate the grandeur of the lake scenery in its setting of steep-walled mountains.    From Wordnik.com.  [The Western United States A Geographical Reader] Reference

As the terrain around them gradually changed, becoming rocky and more rugged with ravines and steep-walled canyons, Ayla felt a growing sense of excitement.    From Wordnik.com.  [The Mammoth Hunters]

His camp lay directly behind him, in a narrow, steep-walled valley which was indeed merely a continuation of the Valley of Lions, pitching up at a higher level.    From Wordnik.com.  [The Bloody Crown of Conan]

With an altitude of 1,000-2,000 ft (300-600 m), it is trenched by the Copper River and its tributaries, which form steep-walled canyons 100-500 ft (30-150 m) deep.    From Wordnik.com.  [Coastal Trough Humid Tayga Province (Bailey)] Reference

The streams of the Sierra Nevada mountains begin their course in steep-walled alcoves under the shadows of the high peaks, where they are fed by perpetual snow-banks.    From Wordnik.com.  [The Western United States A Geographical Reader] Reference

The planet was still relatively thinly populated, with great forests and plains standing empty, archaic cities and villages huddled about the steep-walled castles of the nobles.    From Wordnik.com.  [Agent Of The Terran Empire]

That Plateau encompasses about 1,600 square miles of sedimentary rock and consists of successive south-to-north ascending plateaus or benches, deeply cut by steep-walled canyons.    From Wordnik.com.  [Proclamation Of Grand Staircase National Monument] Reference

Boco has a steep-walled, narrow mouth opening into a rapids!.    From Wordnik.com.  [The Rainbow Trail] Reference

The trail follows Avalanche Creek up a picturesque, steep-walled valley.    From Wordnik.com.  [Glenwood Springs Post Independent - Top Stories] Reference

He was wearing a black dress and walking around the steep-walled, empty moat.    From Wordnik.com.  [Interested-Participant] Reference

A dramatic 250-m-wide, very steep-walled crater with a jagged rim caps the volcano.    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

He rounded a huge dome, climbed a low, rolling ridge, descended and ascended, and came out upon the rim of a steep-walled amphitheater.    From Wordnik.com.  [The Rainbow Trail] Reference

He stopped for the night in a steep-walled hollow and built a small fire of dead moss and grass to ward off the chill that came with dark.    From Wordnik.com.  [Space Prison] Reference

But Orpheus said: "Turn from them, for no living man can land there: there is no harbour on the coast, but steep-walled cliffs all round.".    From Wordnik.com.  [Myths That Every Child Should Know A Selection Of The Classic Myths Of All Times For Young People] Reference

The 2-km-wide eastern portion of the caldera contained a steep-walled inner crater whose floor prior to the 2003 eruption was only 68 m above sea level.    From Wordnik.com. Reference

Down toward the lower end of the valley where the floor of the plateau dropped precipitously into the steep-walled cañon the fire Terry had set was still burning fiercely.    From Wordnik.com.  [Man to Man] Reference

Then suddenly it turned parallel with the edge of a steep-walled gap, which came without warning, like the ha-ha of an English park, -- turned with an unexpected abruptness.    From Wordnik.com.  [The Island of Doctor Moreau] Reference

His companions knew of a short route that would take them directly to the Thomas hacienda, and they were following a steep-walled canyon out of the mesa lands to the westward.    From Wordnik.com.  [Kid Wolf of Texas] Reference

A steep-walled semicircular basin in a mountain; may contain a lake.    From Wordnik.com.  [Visual Thesaurus : Online Edition] Reference

It was steep-walled, but it could be climbed.    From Wordnik.com.  [The Best Made Plans] Reference