climbable, unscalable, nuptse, corniced, glaciated, pathless, mount parnassus, karakoram range, hummock, craggy, cragged, impenetrable, chilkoot pass, crenelated, ungroomed, traversable, glacial boulder, untrodden, bunny slope, bivvy, embanked, mountainous, subalpine, pinnacled, metamorphic rock, tussocky, glasslike, rubbly, inaccessible, moonlike, snowcapped, wasatch range, steep, impregnable, harney peak, alpine glacier, uphill, treacherous, guyed, muztagh ata, rock outcrop, stony, semidesert, cog railway, camphor tree, alpine, lassen peak, scafell pike, pyrenean, engelmann spruce, impassable, unconquerable, jungly, volcanic crater, annamite, isosceles triangle, acrophobic, nanga parbat, mount fuji, heaviside layer, bristlecone pine, treeless, subalpine fir, unpassable, inhospitable, sloping, summited, longs peak, conquerable, roughcast, bristlecone, rooty, rimed, hindu kush mountains, namib desert, nanda devi, mantled, pebble dash, featherlike, himalaya mountains, limber pine, cypress pine, landform, hewn, wrangell mountains, crossable, stalactite, teton range, castellated, deodar cedar, unmelted, unreachable, sidehill, volcanic rock, turtleback, manlike, gnarly, rutty, tatra mountains, metalled, tien shan, red osier dogwood, rocky, scarped, rugged, lofty, precipitous, barren, riven, topped, windswept, jagged, snowcovered, steepest, yonder

unsurmountable