mirror of
https://expo.survex.com/repositories/expoweb/.git/
synced 2024-11-22 15:21:55 +00:00
82 lines
4.4 KiB
HTML
82 lines
4.4 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
|
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
|
|
<title>Stellerweg system: the surveys</title>
|
|
<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
|
|
</head>
|
|
<body>
|
|
<h2>Stellerweghöhlensystem surveys</h2>
|
|
|
|
<p>Various low-grade surveys were published during the course of the
|
|
exploration, but these were mostly A4 format and of limited value. After the
|
|
cave was bottomed, A0-sized plan and elevations were prepared, and a reduced
|
|
version of these was published at A3 size with the 1983 issue of Cambridge
|
|
Underground. The <a href="../../years/1982/41gd.htm">descriptive
|
|
article</a> which accompanied this survey makes a great deal of the supposed
|
|
134° error in one compass. The compass was subsequently found to be
|
|
in error by a much more believable 180° which renders the published
|
|
survey wrong in one area.</p>
|
|
|
|
<p>The survey is, perhaps surprisingly, at its worst in that part of the cave
|
|
first explored. The main Stellerweg route was surveyed at grade 4 (after
|
|
correction for fridge north) in 1980 to the head of the Big Rift, but only by
|
|
measuring rope lengths on pitches after that (the expedition was very pressed
|
|
for time and manpower when this route was connected to 115 in 1981). Only a
|
|
cursory survey was done of the German route, as we expected to obtain a copy
|
|
of the original survey (from 1972 ?) - we are still waiting.</p>
|
|
|
|
<p>The survey of what became the "normal" route to the bottom is much
|
|
better, being to grade 5 all the way from the 115 entrance to The Confluence.
|
|
A short stretch from here to the 12' climb was not resurveyed in 1982, and
|
|
hence relies on 1981 data done with a Silva compass, for which only grade
|
|
3 is claimed. However, agreement between parts of the grade 3 survey and
|
|
the subsequent grade 5 one is pretty good, so there is no reason to expect
|
|
particularly poor quality here. From the 12' climb to the bottom was all
|
|
surveyed, in 1982, to grade 5 by the dedicated minority who were actually
|
|
hard enough to get this far down the cave (and stupid enough to push a low
|
|
airspace duck at -700m - they deserved it).</p>
|
|
|
|
<p>Thus, the depth quoted on the 1983 published survey is almost entirely
|
|
dependent on a grade 5 centre line which agreed well with other bits of
|
|
survey where these existed. There are no significant closed loops to
|
|
provide independent checks. The only known problem with the published
|
|
survey is the section of passage drawn 46° out due to the "fridge
|
|
north" calibration cock-up.</p>
|
|
|
|
<p>After the high entrances of <a href="../143.htm">143</a> and
|
|
<a href="../144.htm">144</a> were explored, and the latter was connected
|
|
into Stellerweg, and considerably more exploration was done in
|
|
<a href="../142.htm">142</a>, including two connections into the main
|
|
system, a lot more survey data was available, all of it above the Big Rift in
|
|
Stellerweg. All these passages were drawn up, at a larger scale than the
|
|
original published survey, and with the fridge north error corrected.
|
|
However, this survey has never been published - CUCC stopped working in the
|
|
cave and the project petered out.</p>
|
|
|
|
<p>A significant part of the survey (all of 142 and the passages of 41 from
|
|
the entrance to the Big Pitch) is drawn up in machine-readable form, and
|
|
extracts from this appear in these pages in the descriptions of the
|
|
<a href="off41.htm#ent142">1623/142</a> and <a href="144.htm">1623/144</a>
|
|
entrances. An overview of the whole survey (at a reduced scale) is also on
|
|
the site <a href="hlevel.png">here</a>.
|
|
A lot more survey work is expected in the cave over the next few
|
|
years (and this has already started). One connection from
|
|
<a href="../../noinfo/1623/78.htm">Schwabenschacht</a> (1623/78) to the 1623/142 entrance
|
|
has already been made, and other connections seem likely. It is hoped that we
|
|
will also be able to obtain details of the other caves connected to the
|
|
system, and be able to draw up a full survey of what is already at least a
|
|
20km system.</p>
|
|
|
|
<hr />
|
|
<!-- LINKS -->
|
|
<ul id="links">
|
|
<li><a href="../41.htm">Back to overview</a></li>
|
|
<li><a href="../index.html#id115">Schwarzmooskogel ridge area</a></li>
|
|
<li><a href="../../indxal.htm">Full Index</a></li>
|
|
<li><a href="../../areas.htm">Other Areas</a></li>
|
|
<li><a href="../../index.htm">Back to Expedition Intro page</a></li>
|
|
</ul>
|
|
</body>
|
|
</html>
|