In a previous post I discussed the concept of terrain association. Terrain association is
the process of visually confirming
a map to land features.
A subset of
terrain association is the use of handrails.
Handrails are linear features found on a map and visually correlated to observed
land features. In a building, a
stairway’s handrail provides direction for a walkers travel down to another
level.
Examples of handrails
include roads, rivers, trails and railroad beds. Handrails can be particularly useful when
they run parallel to ones’ direction of travel.
Highway 126
and Cache Creek are distinct linear features that could serve as a handrail.
In the map
above notice that the red direction of travel line parallels Highway 126.
In this example Highway 126 could also be a
backstop to alert the hiker that crossing the roadway would take them in the
wrong direction.
Be alert for
a handrail’s change of direction. There
may be prominent land features that will alert the backcountry traveler to such
a change. A butte or building might be
adjacent or near to a change in direction.
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