Autonomous Height The height of a mountain which belongs entirely to that mountain and no higher mountain. This was the term we used in Bivouac to refer to the concept known as "Prominence".
Base Contour The lowest contour on a mountain which completely surrounds that mountain, and no higher mountain.
Cell A "prominence cell" is an area of land containing one mountain of a given prominence threshold. For example, North America breaks into 12 "P3000" cells. See Prominence Cells and their Boundaries
Cell Map A cell map divides an area according to a fixed mountain prominence. Eg: A P3000 cell map of North America.
Clean Promience An old term for pessimistically estimated prominences. See definition for Estimated Prominence.
Contour Parent (True Parent) The lowest peak which has a contour line completely surrounding a given peak.
Estimated Prominence A prominence value which is estimated from contour lines, not surveyed heights, according to one of three methods: optimistic, pessimistic or interpolated.
Greater Parent The first peak up the prominence walk that is both higher and also more prominent.
Higher Ground An area of terrain on the far side of the key saddle that is higher than the peak itself.
Highest Mountains Highest mountains within a given region.
Isolation The distance in kilometers to the "line parent".
Key Saddle The lowest col on the ridge that connects a given peak to a higher peak. See prominence.
Line Parent The first higher peak on the prominence line of a given peak. See Line Parent Definition And Database Stability and also Mountain Hierarchies (Line Parent, Subpeak).
Lineage The hierarchial sequence of peaks above a given peak.
Mountain An uplifted mass of land above a low lying area. See Mountain
Mountain Hierarchy An arrangement of mountains into levels, based on heights and prominences. Mountain Hierarchy
Mountain Prominence Regions The vertical separation between a given peak and the highest saddle connecting it to a higher peak. See Mountain Prominence
Mountain Range A collection of mountains with an official name on various government maps. See Mountain Range
Mountain Region An abbreviated term we use for Mountain Prominence Region. See Mountain Prominence Regions
Parent The peak above a given peak in the hierarchy. Three possible methods.
Peak The top point of a mountain. Difference between a peak and a mountain is that "mountain" refers to the full land mass, whereas we use peak to refer only to the top. Definition of Mountain
Prominence The vertical separation between mountains. See Mountain Prominence
Prominence Line The highest ridge connecting a given peak to a succession of higher peaks. See Mountain Prominence
Prominence Region The area associated with a given mountain in a regional breakdown based on prominence. This is the short form for "mountain prominence region"
Prominence Saddle The low point on the highest ridge connecting a given peak to a higher peak. Another term for the same thing is "key saddle".
Prominence Walk The highest ridge which connects a given peak to higher ground.
Range A "range" is a named group of mountains, usually separated from other mountains by low passes. See Mountain Range Definition See also: Hierarchy of Mountain Ranges
Region A mountain region is an area of land associated with a given mountain. Region Hierarchy for North America
Region Hierarchy An arrangement of mountain regions into a hierarchy. See Prominence Regions and Region Hierarchies
Saddle The lowest point between two peaks. "Pass" and "Col" are more specific terms.
Separation Horizontal distance up the line parent chain to a peak both higher and more prominent.
Source Parent The first peak on the prominence line that is both higher and has more prominence. See Mountain Hierarchies.
Subpeak A low prominence peak close to a significantly more major peak.