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  2. Draw (terrain) - Wikipedia

    en.wikipedia.org/wiki/Draw_(terrain)

    Example on a topographical map, and how it would look in the real world. Typical draw, Little Carpathians. A draw, sometimes known as a re-entrant in orienteering, is a terrain feature formed by two parallel ridges or spurs with low ground in between them. The area of low ground itself is the draw, and it is defined by the spurs surrounding it.

  3. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    A topographic survey is typically based upon a systematic observation and published as a map series, made up of two or more map sheets that combine to form the whole map. A topographic map series uses a common specification that includes the range of cartographic symbols employed, as well as a standard geodetic framework that defines the map ...

  4. Site plan - Wikipedia

    en.wikipedia.org/wiki/Site_plan

    Example of a site plan. A plot plan. A site plan or a plot plan is a type of drawing used by architects, landscape architects, urban planners, and engineers which shows existing and proposed conditions for a given area, typically a parcel of land which is to be modified. Sites plan typically show buildings, roads, sidewalks and paths/trails ...

  5. Position resection and intersection - Wikipedia

    en.wikipedia.org/wiki/Position_resection_and...

    Position resection and intersection are methods for determining an unknown geographic position (position finding) by measuring angles with respect to known positions.In resection, the one point with unknown coordinates is occupied and sightings are taken to the known points; in intersection, the two points with known coordinates are occupied and sightings are taken to the unknown point.

  6. Land navigation - Wikipedia

    en.wikipedia.org/wiki/Land_navigation

    Land navigation is the discipline of following a route through unfamiliar terrain on foot or by vehicle, using maps with reference to terrain, a compass, and other navigational tools. [1] It is distinguished from travel by traditional groups, such as the Tuareg [ 2 ] across the Sahara and the Inuit [ 3 ] across the Arctic , who use subtle cues ...

  7. Saddle (landform) - Wikipedia

    en.wikipedia.org/wiki/Saddle_(landform)

    A 'saddle point' in mathematics derives its name from the fact that the prototypical example in two dimensions is a surface that curves up in one direction, and curves down in a different direction, resembling a riding saddle or a mountain pass between two peaks forming a landform saddle.

  8. Spur (topography) - Wikipedia

    en.wikipedia.org/wiki/Spur_(topography)

    A spur is a lateral ridge or tongue of land descending from a hill, mountain or main crest of a ridge. [1] [2] It can also be defined as another hill or mountain range which projects in a lateral direction from a main hill or mountain range. [3] Examples of spurs include:

  9. United States National Grid - Wikipedia

    en.wikipedia.org/wiki/United_States_National_Grid

    Briefly, an example of a full USNG spatial address (grid reference) is: 18S UJ 23371 06519 (This example used by the FGDC is the full one-meter grid reference of the Jefferson Pier in Washington DC.) [10] This full form (15 characters) uniquely identifies a single one-meter grid square out of the entire surface of the earth.