mirror of
https://expo.survex.com/repositories/expoweb/.git/
synced 2024-11-26 17:21:55 +00:00
107 lines
4.8 KiB
HTML
107 lines
4.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
|
|
<title>1983: Cambridge Underground report</title>
|
|
<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
|
|
</head>
|
|
<body>
|
|
<h1>Cambridge Expo 1983</h1>
|
|
|
|
<center><font size=-1>Cambridge Underground 1984 pp 35-36</font>
|
|
|
|
<h2>Reality is an illusion caused by alcohol deficiency</h2>
|
|
<h3>(or Why Stellerweg rotated this year)</h3></center>
|
|
|
|
<p>In 1980, when CUCC started to explore the new route in Stellerweghohle,
|
|
surveying was, for the first time, considered a priority. So it was that
|
|
a party of two surveyed from the Big Pitch to the head of the Big Rift
|
|
using the CUCC Suuntos. The same surveyor returned a few days later with
|
|
a different companion, to survey out from the Big Pitch to the entrance,
|
|
this time with the EXCS Suuntos.
|
|
|
|
<p>Back in the camp, calculators were punched, coordinates scribbled,
|
|
and the survey hastily drawn up. The surveyors looked at each other in
|
|
some confusion. The cave seemed to be floating, airborne, across the
|
|
valley and over a cliff. Unable to recall that it had been in daylight
|
|
with a sense of exposure, they came to the conclusion that it was
|
|
plotted in the wrong place.
|
|
|
|
<p>The surveyors retired to Bar Fischer to consider the dilemma. All
|
|
problems dissolved in a haze of Reininghaus bier fumes as the truth
|
|
dawned. One R.J.Shackleton, who had been in possession of the EXCS
|
|
compass for some time, was in the habit of storing it in the top of
|
|
his fridge. This has resulted in a slight magnetic adjustment, so the
|
|
survey was now plotted not to grid- or true-north, but to fridge-north!
|
|
What was needed was a little calibration, so, armed with a map, both
|
|
compasses, and several more bottles of ale, the party set out to take
|
|
bearing on local landmarks.
|
|
|
|
<p>An hour or so later, it was decreed that the compass was 134° in
|
|
error and the survey redrawn accordingly. Since it was now inside the
|
|
hill, all seemed to be well. The compass quietly vanished from sight and
|
|
all accompnying evidence was destroyed.
|
|
|
|
<p>1981 saw a connection between Stellerweg- and Schnellzughöhlen, but
|
|
serious surveying was carefully avoided. 1982 saw CUCC at the bottom
|
|
of the system, and a lot of surveying was undertaken to avoid ever going
|
|
there again, but Stellerweg was not rigged and hence the biggest closed
|
|
loop kept its secret.
|
|
|
|
<p>1983, and out heroes connect the new entrance, 142 (née 132),
|
|
into the system. Now comes the critical mistake. Wide-eyed, innocent and
|
|
pleased with the glory brought to CUCC by pretty surveys, CUCC connect
|
|
everything together with a half-mile closed loop through 142.
|
|
|
|
<p>Back in England the greedy computer devours all the numbers and prints
|
|
out the misclosure, about two inches vertically - pretty good that eh?
|
|
But what's this? Just over a quarter of a mile out horizontally?!?!?!?
|
|
|
|
<p>Detective work soon revealed that a slight rotation would make
|
|
Stellerweg fit very nicely. In fact, the figure turned out to be
|
|
46°. But 46+134=180. And 180° is a much more probable figure
|
|
for a compass error than 134°. Also, when the compass was traced,
|
|
a sober experimenter found it had precisely the error expected. Thus the
|
|
survey as published should rotate the section from the entrance to the
|
|
Big Pitch by 46° clockwise. The streamway from the Big Pitch to the
|
|
Big Rift needs translating appropriately, and the conveniently
|
|
unsurveyed Big Rift is a lot shorter than shown. None of the remainder
|
|
of the system was surveyed with the duff compass, but a big section of
|
|
the Sonnenstrahlhöhle survey is also wrong, but that didn't have a
|
|
north arrow anyway (guess why !).
|
|
|
|
<p>It is expected that the survey will be redrawn correctly when
|
|
enough additional passage has been found to justify the work involved.
|
|
|
|
<p align=right><font size=+1>A.E.R.Waddington</font> (now sober!)
|
|
|
|
<p><hr />
|
|
<!-- LINKS -->
|
|
<ul id="links">
|
|
<li><a href="../../1623/41/41.htm">Stellerweghöhle</a>
|
|
main guidebook page</li>
|
|
<li>Cambridge Underground 1984,
|
|
<a href="../../../jnl/1984/index.htm">Table of Contents</a></li>
|
|
<li>1983 Expedition info:
|
|
<ul>
|
|
<li><a href="log.htm">Logbook</a></li>
|
|
<li>Main Expo report, Cambridge Underground 1984:
|
|
<ul>
|
|
<li><a href="wolf1.htm">Wolfehohle</a> - Act I</li>
|
|
<li>Exploration and Survey of <a href="exp142.htm">1623/142</a>
|
|
<ul>
|
|
<li><a href="exp142.htm#possext">Possible extensions</a>
|
|
to the 41-142-115 System</li>
|
|
</ul></li>
|
|
<li><a href="143144.htm">143 and 144</a> Guidebook descriptions</li>
|
|
<li><a href="list.htm">Summary of Caves 1983</a></li>
|
|
</ul></li>
|
|
<li><a href="bcracc.htm">BCRA Caves & Caving Report</a></li>
|
|
</ul></li>
|
|
<li><a href="../../pubs.htm#pubs1983">Index</a> to all publications</li>
|
|
<li><a href="../../index.htm">Back to Expeditions intro page</a></li>
|
|
<li><a href="../../../index.htm">CUCC Home Page</a></li>
|
|
</ul>
|
|
</body>
|
|
</html>
|