expoweb/plateau/164.htm

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2001-08-15 19:29:27 +01:00
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<title>1623:164</title>
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<center><table border=0 width=100%>
<tr><th align=left><font size=+2>164</font></th>
<th align=center><font size=+2>Plateau Schacht 164</font></th>
<th align=right><font size=+2>2/S +</font></th></tr>
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<p><b>Altitude:</b> 1641m (at lip), Depth 60ish metres<br>
<b>Position:</b> E 35538 N (52)82509 (first bolt of rigging)<br>
<b>Marking:</b> On wall above entrance, facing NE, number in red, 1988.
Austrian metal tag, 1995.
<p><b>Location:</b> On plateau, beyond <a href="198.htm">B11</a> (1623/198).
This is a snow-choked shaft next to the very large snow-choked shaft, which
has always been blocked with snow and was therefore not explored or numbered
for many years, but is now <a href="189.htm">189</a>.
<p><a href="others/l/189164.htm">
<img src="others/t/189164.jpg" width=121 height=176
align=bottom alt="entrance picture - 87k jpeg"></a>
164 entrance (left of centre) seen over 189 entrance.
<p>The entrance pitch is 10m, and has a detectable draught - quite strong in
view of the size of the entrance. There was only the remains of a snow plug
in 1988, although the plug is almost complete in some years (eg. 1995 - it was gone again in 1996).
<p>A small stream enters and lands on boulders at the foot of the pitch in a
passage leading south along a fault. A climb of 4m over precarious boulders
reaches a bolt for the second pitch. The quality of rock in this area leaves
a lot to be desired. The second pitch, 12m and third pitch, 15m are separated
only by a small ledge. Water sinks in floor of small passage floored with
what would appear to be the previous season's roof, now decayed into small
jagged rocks. Continuing passage over boulders rises to 4-5m dropping steeply
for 30m on the same south-trending fault. The water is rejoined at a
freehanging 10m pitch from a rock bridge overlooking a sizeable chamber.
<p>The stream sinks at the foot of the pitch in the centre of the 15m by 7m
chamber floor. To the east, a scramble leads up to a shattered cross-rift
from a large shelf about 15m long and 10m wide, but ends too tight. A similar
feature to the west up a 4m climb becomes a low bedding with no way on. Due
south are two passages, the one to the right leading 20m round a couple of
bends to a sandy choke. The left passage quickly chokes. The draught seems to
be lost into the continuation of the passage above the final pitch, on the
far side of the chamber. This would be best reached by a traverse on steep
loose rock from the 4m climb in the chamber. The pitches take large
quantities of water very quickly in rain.
<p><b>Exploration:</b> <a href="../years/1988/164.htm">CUCC 1988</a>
<p><b>Survey:</b>&nbsp;&nbsp;&nbsp;
<a href="others/164.gif">Elevation</a> in Cambridge Underground 1989
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