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Hollow: A term used regionally for a small valley surrounded by mountains or ridges. In Ireland, New England, Appalachia, and the Ozarks of Arkansas and Missouri, a hollow is a small valley or dry stream bed; often called a holler. Longitudinal valley: An elongated valley found between two nearly-parallel mountain chains.
Cove (mountain) – Small valley in the Appalachian Mountains between two ridge lines; Crater – Depression caused by an impact or geologic activity; Crevasse splay – Sediment deposited on a floodplain by a stream which breaks its levees; Crevasse – A deep crack, or fracture, in an ice sheet or glacier
Glen of Aherlow – a glen is a long, deep valley, while Aherlow is from the Irish eatharlach, meaning "lowland between two mountains", i.e. a valley. Gobi Desert, Mongolia (Desert Desert – "Govi" is Mongolian) Hardtwald in Baden-Württemberg, Germany – "hardt" is an exploited forest, and "wald" means "forest".
Idealised mountain pass represented as the green line; the saddle point is in red.. Mountain passes make use of a gap, saddle, col or notch.A topographic saddle is analogous to the mathematical concept of a saddle surface, with a saddle point marking the minimum high point between two valleys and the lowest point along a ridge.
Death Valley is a graben—a downdropped block of land between two mountain ranges. [13] It lies at the southern end of a geological trough, Walker Lane, which runs north to Oregon. The valley is bisected by a right lateral strike slip fault system, comprising the Death Valley Fault and the Furnace Creek Fault.
Canyon / Gorge – Deep chasm between cliffs; Chine – Steep-sided river valley; Couloir – Steep, narrow mountain gully; Defile (geography) – Narrow pass or gorge between mountains or hills; Gully – Landform created by running water and/or mass movement eroding sharply into soil; Mountain pass – Route through a mountain range or over a ...
The valley is bound to the west and north by the Ridge-and-Valley Appalachians (Bear Pond Mountains/Blue Mountain), to the east and south by South Mountain, to the northeast by the Susquehanna River at Harrisburg, and to the south by the Potomac River. The portion of the valley residing in Maryland is sometimes referred to as the Hagerstown Valley.
Beaver Dam Mountains, January 2007 Boundary Cone and the Black Mountains (Arizona), viewed from about ~due-west (from Mohave Valley, in Lower Colorado River Valley) Aquarius Mountains–Mohave County; Artillery Mountains–Mohave County; Aubrey Hills–Mohave County ( Beaver Dam Mountains–S. Washington County, Utah -- (N. Mohave County ...