Some web sites offer hikers necessary preparation “must-haves” when packing for a trip as well as information about various trails around the country.
[1] Navigating through, to, and away from people's destinations require, in many instances, the use of maps, descriptions of or around those places, and/or a combination of these displayed on paper or through today's extended market of GPS devices.
The maps help give the reader a graphic representation of the environment and may vary in the level of spatiality and labeling.
Additionally, some camera's have a GPS module included internally that allow the digital image to contain geographic coordinates that can help determine the location where the picture was taken.
GPS devices, along with satellite data has helped determine the heights of mountain peaks as well as the depths of subterranean pits and caves.