dale, vale, hollow, glen, ravine, gorge, canyon, dell, trough, basin, depression, lowland, bottom, coulee, draw, dingle, cleft, notch, gap, arroyo, gully, swale, wash, rift, chasm, defile, wadi, coulo... [more]
dale, vale, hollow, glen, ravine, gorge, canyon, dell, trough, basin, depression, lowland, bottom, coulee, draw, dingle, cleft, notch, gap, arroyo, gully, swale, wash, rift, chasm, defile, wadi, coulo... [more]
Abysses, gorges, ravines, canyons, fissures, crevices, rifts, gulfs, clefts, gaps
