Broken Horn Cave - A Mapping of a New Cave - page 2


 

Broken Horn Cave - 1st Survey Prospects

Date: Sunday - Jan. 22, 2006

COG Participants:
Anne Ault, John & Sue Bozeman, Duane Del Vecchio, Roy Diehl, Dale & Lil Town, Jon Woltz

Area: Woodward County, Oklahoma - USA

How does one map a cave?? You have to have at least 3 people. One for reading a compass and an elevation device (to tell if the passage is going up or down!), one for pulling the measuring tape and setting the survey points, and a recorder who writes down all of the distances called out by the other members of team as well as drawing a "rough draft" of the passage they are in. Then the team enters the cave and begins their job. Here is a pictorial of a cave survey trip....


Click on any photo to see an enlarged version.

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Another person on the survey team runs "the book". That person records each survey point, the measurements of right of the survey, left, up, and down as well as sketches the area. Some markers for the other group to tie their survey into an existing survey point so that when the final map is made, then all points match the actual drawing. There really isn't fog in the cave...but due to the high temps and high humidity, a person's own body heat can create an "ambience" fog effect!
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D left his group for a while and went to see how the other group was doing (Ann, Dale, Lil, and Roy).. they were surveying a side passage.. One of the problems a 'recorder' has during a mapping trip is keeping the notes 'clean' ... free of mud and other cave obstacles! Here Sue is taking recordings called from the compass guys. Sometimes the cave doesn't cooperate.. and makes one record under very "TIGHT" circumstances! Here Jon is in an area 11 inches high and STILL has to take height and compass readings!
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Roy waiting for the compass readers to finish after running a tape (but D's personal fog bank interferes with the picture) Jon doing a back reading on the compass to the others back in the other section of the cave. D ran the tape on our group (Sue & John, D, and Jon). The person running the tape sets the survey points for the compass and elevation readers to take their readings from.
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The point for a survey marker can be a rock, major landmark, or a temporary landmark (such as the mud gollum trapped in the stonehedge!). Some markers are temporary and others are terminate. Finally we finish for the day and it's time to exit the cave. The cave was very nice to us today.. giving us lots of room to maneuver..
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...that is... until the entrance/exit... where it a nice tight belly crawl! You always find out what the biggest part of your body is when you go thorough a tight squeeze! <grin!> Finally.. the last one is out... time to change into fairly clean clothes (so you don't' dirty your car!) and then off to the nearest town for some pizza and refreshments!
 

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Last updated: 1/26/06