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Extremeophile wrote:I'm not specifically familiar with Therion, but other data reduction programs such as Compass and Walls allow you to enter a geo-reference point, such as the entrance, and then will give you the coordinates and elevation for any survey station in the cave.
Martin Sluka wrote:Wuith all respect:
If there is a surface breakdown the most accurate way is to use method named "radiolocation". In the simplest way you may use avalanche transceivers. Check:
http://caves.org.uk/radio/bookinfo_02.html
LukeM wrote:Radiolocator kits:
http://radiolocation.tripod.com/
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