TL;DRAbstract
Such subsurface geological resources as mineral deposits and fossil fuels are detected and analyzed by drilling and by remote sensing. Caves, however, can be traversed by people. Unlike mountains, lakes, or rivers, which can be seen in their entirety from a distance and mapped from the air, caves cannot be characterized unless they are surveyed from within. Until a cave has been explored, its extent, branches, and end cannot be predicted. Cave surveyors are isolated from the surface world of benchmarks, air photographs, and global positioning satellites (GPSs). They must rely solely on a survey line run through the cave passages to determine position. Each segment of passage has length and direction. Each segment is a vector in the earth. A cave map is a representation of these vectors (Dasher 1994).
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Such subsurface geological resources as mineral deposits and fossil fuels are detected and analyzed by drilling and by remote sensing. Caves, however, can be traversed by people. Unlike mountains, lakes, or rivers, which can be seen in their entirety from a distance and mapped from the air, caves cannot be characterized unless they are surveyed from within. Until a cave has been explored, its extent, branches, and end cannot be predicted. Cave surveyors are isolated from the surface world of benchmarks, air photographs, and global positioning satellites (GPSs). They must rely solely on a survey line run through the cave passages to determine position. Each segment of passage has length and direction. Each segment is a vector in the earth. A cave map is a representation of these vectors (Dasher 1994).
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