Benchmarks #62 Traditional Cache
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Difficulty:
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Terrain:
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Size: 
(regular)
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Under s big ol’ tree root, with wood chunk and local leaf matter assisting in camouflage duty.
Thanks Rod for coming to the rescue, again.
Benchmarks can be divided into two general groups. The first group, "vertical control points" are objects that mark a very precise elevation above the standard datum plane (usually referred to as elevation "above sea level"). The second group are the "horizontal control points" - objects with precisely established latitude and longitude. At this point, we should explain that "benchmark" is a generic term that is used at Geocaching.com to refer to all geodetic control points. In the surveying profession, however, the term bench mark (usually two words) is explicitly used for points of known elevation or vertical control. When the benchmark is established at known latitude and longitude, it is described as a horizontal control. The generic terms favoured by professionals to describe horizontal control are station or mark, rather than "benchmark". For a list/map of historic Australian benchmarks visit: https://geodesyapps.ga.gov.au/historic-geodetic-benchmarks/ Thanks to n0w0rries for replacing this for me July 2022, and again Christmas ‘23.
Additional Hints
(Decrypt)
Pnzbhsyntrq fvfgrzn
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