mirror of
https://expo.survex.com/repositories/expoweb/.git/
synced 2024-12-22 00:12:21 +00:00
71 lines
3.0 KiB
HTML
71 lines
3.0 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0//EN">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
|
|
<title>1987: Cambridge Underground report</title>
|
|
<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
|
|
</head>
|
|
<body>
|
|
<h1 align=center>1991 Expo</h1>
|
|
|
|
<center><font size=-1>Cambridge Underground 1988 p 7</font>
|
|
|
|
<h2>Extensions to 113, "Sonnenstrahlhöhle"</h2>
|
|
|
|
<p><b>Mike Richardson</b></center>
|
|
|
|
<p>Entrance 113 had been extensively explored by previous expeditions to a
|
|
depth of about 450m. The surveyed route led across the head of a steep
|
|
descent to "Ibbeth Perilous" pitch. This had not been descended since 1980
|
|
when a caver (see <a href="report.htm#helmet">elsewhere</a> in this journal)
|
|
lost his helmet and light down it. In 1987, in the course of looking for
|
|
extensions across the tops of a number of ramps near the entrance, a descent
|
|
was made to the head of this pitch (although at the time it was not certain
|
|
that this was Ibbeth Perilous).
|
|
|
|
<p>A little way into the passage at the bottom of the entrance shaft, two
|
|
parallel steep ramps descend for about 15m. The ramps have been free-climbed,
|
|
however, an uncontrolled descent by Andy Farrow indicates that a rope is very
|
|
desirable. The second ramp is blocked at the bottom, but a small hole gives
|
|
access back to the bottom of the first. From here a short climb leads to a
|
|
jammed boulder above the first proper pitch.
|
|
|
|
<p>The shaft descends in a series of steps for a further 20m. These are
|
|
free-climbable with difficulty. A 13m drop then lands on an ice-rock
|
|
blockage, which previously contained the helmet and light, now recovered and
|
|
presented to their owner. This point has been named "Marathon Ledge" after
|
|
Becka regurgitated a partially digested Marathon Bar over Chris from halfway
|
|
up the pitch above.
|
|
|
|
<p>The blockage was hammered out by a caver attached to a rope, after which
|
|
two short drops led to a 6m pitch to a large chamber. This proved to be in
|
|
the "Opera House" are of the original route.
|
|
|
|
<p>The earlier survey suffered from a compass of questionable calibration,
|
|
due to an encounter with a fridge (see <a href="../1983/41svy.htm">Cambridge
|
|
Underground 1984</a>). The survey of the new extension has now allowed the
|
|
orientation of the cave to be determined with greater accuracy. This is
|
|
important, since entrance 152 enters the cave lower down (below the "Purple
|
|
Pit"), and the entrance is only some 50m from an entrance into the
|
|
Larchenhöhle system discovered by German and French cavers in 1987. A
|
|
connection between 113-153 and the German-French entrance would add a
|
|
significant amount of length to the combined system.
|
|
|
|
<hr />
|
|
<ul>
|
|
<li><a href="../../1623/113.htm">Sonnenstrahlhöhle</a>
|
|
Guidebook page</li>
|
|
|
|
<li><a href="log.htm">Logbook</a></li>
|
|
|
|
<li><a href="report.htm">Expedition description</a></li>
|
|
<li><a href="158gd.htm">Donner-und-Blitzen Höhle</a>, Mike Richardson</li>
|
|
</li>
|
|
<li><a href="geolog.htm">Geology of the Totengebirge</a>, Jared West<br>
|
|
<!-- <li><a href="bcracc.htm">BCRA Caves & Caving Report</a><br> -->
|
|
</ul>
|
|
<hr />
|
|
|
|
</body>
|
|
</html>
|