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<center><table border=0 width=100%>
<tr><th align=left><font size=+2>5</font></th>
<th align=center lang=de><font size=+2>Nagelstegh&ouml;hle</font></th>
<th align=right><font size=+2>2/W +</font></th></tr>
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<p><b>Altitude</b>: 865m<br>
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<b>Location</b>: Above Rettenbachtal (north side); about 20-25 minutes
on foot from Blaa-Alm.
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<p>A resurgence cave of major importance, visited by CUCC in 1976 and 2002.
Krenmayr gives it 278m long, seasonally active, very roomy water cave. The
associated perennial resurgence is Naglbr&uuml;nndl, putting out 50-100 l/s.
<p>Continue past the Blaa-Alm
hostelry on the track to a crossroads of paths. Take the path to the right and
then bear downhill and to the left at a fork by a small wooden hut.
Follow the track until you end up walking parallel to the river; keep a
lookout on the right for a small bridge across the river. Cross the bridge
and take a small path to the left, which arrives at a further (smaller!)
bridge over a stream. Just before the bridge, ascend up the hillside to
the right through the undergrowth, keeping the large rocky gully to your
right and the stream to your left. After a few minutes you will arrive
at the resurgence (under tree-roots) to the left. At this point, cross
into the gully on the right and climb up to the very top to reach the
cave.
<p>Entrance is at the head of a large, steeply-inclined stream bed (carries
major flow in flood), and is reminiscent of Sleets Gill. A short climb
(protection advisable; two hangers in situ; rope of unknown vintage present in
2002) leads to a tube. This descends at 45&deg; to a short walk round a pool
to a short greasy climb. One soon emerges in the huge main passage, floored at
the lower end by vast amounts of very unpleasant mud. The sump is reached by a
right turn over some fine stratified sand, but CUCC's interest lay in some
holes in the roof at the top end, with the hope of a high-level continuation.
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<p>The mud eventually runs out to be replaced by more and more inclined
slabs, which were very easy on the way up. The gradient steadily increases
until the floor merges into the end wall, and the trickle of water enters
from high up. At this point, a couple of holes in the roof have already
been passed, but investigation revealed these to be beyond reasonable
reach without some fairly serious bolting.
<p><b>Exploration</b>: LVHK Ober&ouml;sterreich, 1972
<hr />
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