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168 lines
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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<title>258: Underground description</title>
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<table id="cavepage">
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<tr><th id="kat_no">258 - a b</th><th id="name">Tunnockschacht</th><th id="status">2 ??</th></tr>
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</table>
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<h2>How to find it</h2>
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<p>From the stone bridge, follow the cairns towards 204e entrance. Upon
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reaching the final gully, where the path turns up to the right towards
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that entrance, continue straight across and then work to the right,
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traversing around
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the rear lip of a hole. This leads to the bottom of a loose climb, which
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is ascended to reach another level. A prominent Christmas tree style fir
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marks the point where another climb is made to the next level up. It is
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then necessary to ascend to the next level above this, either by a short
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traverse and then a narrow climb between two blocks, or by heading right
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and then heading back up to the left. Having done this, a short ascent
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on small loose stones brings one to the uppermost level, marked by a
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prominent cairn (visible from the stone bridge).
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</p>
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<p>Follow the cairns around to the left, descending slightly at first and
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then maintaining the same level, to eventually reach a cairned point
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overlooking a large broken gully running from right to left. Descend
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into the gully (passing the shaft of 2004-18) and cross to the other side
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where an obvious level ascends upwards and to the right. Having reached
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the top, follow the cairns to the right to arrive quickly at an area with
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a hole to each side. The shakehole to the left, containing a cairn some
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two feet high, contains the A entrance; the B entrance is the other hole.
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</p>
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<h2>Entrance shaft</h2>
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<p><b>Warning:</b> There are a fair number of loose rocks on the entrance
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pitch, particularly in the top section. Rocks that have been dislodged
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could fall almost all the way down the shaft.
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It is advisable for one person to
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descend at a time and for the others to cower in the places marked below, or
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wait at the very bottom by the ice stals.
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</p>
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<p>The entrance, of moderate proportions, gives onto a
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steeply-sloping shaft that descends for a total of 70m depth. The
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shaft is imposing, and the view up from mid-descent is impressive.
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A thread in
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the bottom of the shakehole is succeeded by a bolt on the left wall under
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the dripline, enabling a descent for several metres to a small ledge.
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Working around to the right here gains a rebelay, succeeded by another under
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a small nose of rock just where the shaft becomes vertical.
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</p>
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<p>The landing after the rebelay is on a large ledge, partially occupied by
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a large area of snow. There is a bolt here to anchor the rope, and above
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is visible the shaft of the B entrance.
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Upslope leads to an alcove, where it is possible
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to shelter whilst people are on the upper part of the pitch. The rear of
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this alcove opens onto the top of a pitch that appears to be of quite
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some depth [QM B]. Downslope from the landing a traverse is followed on
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the left wall; a bolt low on the wall just before the end provides the
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belay for a scruffy descent of only two metres to another rebelay on a flat
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wall. From here, the descent continues either on top of or alongside a
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large snow plug to a rebelay on the left wall. After this, one continues
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over a section of loose boulders and then drops in an awkward crack to
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a crows' nest known as the Col, where there is a further rebelay. (The
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rigging just above the Col is sub-optimal, and could do with further
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work.) Care should be taken at the Col not to bang one's head on the
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boulders above, as their undersides look loose. The Col provides a further
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place where shelter can be taken from falling debris.</p>
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<p>Continuing the descent in the main shaft from the Col gains another
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snow plug and the base of the rift holding the Col. It is possible that
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this rift could lead to further passage [QM B], either accessed from this
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point or by descending the pitch on the other side at the Col.
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Abseiling over the snow plug towards the right wall, a high bolt provides
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the belay for the final section of the pitch. The rope rubs on a boulder
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here and a deviation should be installed. The final section drops
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near-vertical for a short distance and then becomes steeply-sloping
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over snow. Gradually, the snow flattens out (passing a possible way on
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to the side of the snow plug on the left wall [QM C]),
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and the bottom is reached
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at a pool of ice. There is an ice stal on the right and another in an
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alcove to the left. The one in the alcove could be ascended with ice and/or
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climbing equipment to reach a passage [QM C].
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On the existing rigging, reaching this point requires
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approximately 100 metres of rope, a long sling, and nine hangers.</p>
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<h2>First horizontal level</h2>
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<p>The main way on from the ice pool is a hole at floor level that leads
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into a chamber. Another small hole to the right gives access to
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<b>Bauernkrapfen Passage</b>, a well-formed crawl debouching into a large rift
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chamber, <b>Three Fried Mice</b>. Following the chamber around to the left
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leads to a choke at the bottom of a slope, although before this it is possible
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to climb up the wall and through a hole under boulders to gain a higher level,
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with a view over the chamber before Bauernkrapfen Passage but no other ways
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on.</p>
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<p>Following the rift around to the right from the end of
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Bauernkrapfen Passage, passing some faulted phreatic tubes in the left wall,
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leads to an opening in the right wall. This sucks strongly and
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continues as a phreatic passage past a delicate traverse over a hole [QM C]
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to eventually arrive at a further hole in the floor. This will require
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rigging to traverse or descend.</p>
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<p>Beyond the fine traverse of Caramel Catharsis a large sandy passage slopes
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gently down to a junction. Ahead is a stoop leading though into the Littoral North.
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</p>
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<h2>Littoral North</h2>
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<p>Beyond the stoop is a 3m climb down in a rift below an aven. At the bottom is wide stony passage with abvious ways off to West and North.</p>
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<p>West, there is a stepped pitch down to the left [2007-258-01-A], and a 3m climb up to the right of this (rope needed) leads into a strongly draughting passage which gaoes about 50m to the edge of a large round pitch[2007-258-02-A]. A continuation [2007-258-03-B] can be seen 15m away across the far side.</p>
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<p>North a 2m climb up leads to an unusual critical-angle pile of water-warn rocks <strong>Y KeyKey Beach</strong>. The narrowing at the top of this pile (it gets close to the roof) has a stonking gale coming through it. Just beyond this where the passage widens to 8m, behind the large rock on the left is the hidden entrance to <strong>Rhubarb Crumbly</strong>, the key to the <strong>Max Pleasure</strong> area.</p>
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<p>Ahead the comfortable passage only goes for about 20m before reaching the edge of a huge shaft undercutting the RH wall[2007-258-04-A]. An airy traverse to the left of this reaches another hole on the left down, apparently into the same pitch[2007-258-05-A]. Immediately ahead is another large hole [2007-258-06-A]. There appears to be a continuation across the other side - a long bolted traverse away[2007-258-07-C].</p>
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<h3>Rhubarb Crumbly</h3>
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<p>Climbing down behind a large rock in Littoral North gives access to nice walking passage floored with dark dirt.
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<h2>Dubious Pleasure</h2>
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<h2>Max Pleasure</h2>
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<p>High chamber merges back into walking passage. 10m along a soil slope comes in from the right wall, choked to the left, and a low crawl [2007-258-08-B] to the right. The passage slopes gently down until it meets a larger one with the way on going gently up-dip to the right. There is a large boulder at the junction. The continuation of the larger passage on the left is choked with soil.</p>
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<p>Past a pillar the passage opens up into a high wide chamber with a deep canyon in the floor, largely covered by boulders. At the start of the chamber a rapidly-lowering passage goes back right for 8m before being choked with sand. At the far end of the chamber you step over the canyon [2007-258-09-A] and have to clamber over some very nice flowstone to proceed. The obvious way on is walking passage but in fact the passage goes at two levels here - you can also climb down below the flowstoned chockstone and follow the canyon upstream to get to the same chamber.</p>
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<p>Following the obvious higher level brings you into another chamber with a deep hole in the floor [2007-258-10-A] , mostly blocked by a large jammed boulder. Traversing around the left hand side reaches a 3m climb down to the far side of the hole. This is <strong>Petticoat Junction</strong> where there is a choice of left towards <strong>Let's get Naked</strong> or ahead across rocks and uphill to <strong>Hedonism Highway</strong>.</p>
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<h2>Hedonism Highway</h2>
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Very high rocky passage uphill with monster draft (considering passage size) blowing out. This whole passage is formed on a bedding plane sloping at about 25 degrees from horizontal, so everywhere is walkable but quite steeply sloping. A tricky c2 over a block reaches a sandy hading chamber. Going across to the left reaches a very wide, bedding-aligned area with a choice of routes upwards either side of a pillar. [2007-258-11-A] is a passage off to the left. At the top of the wide bit the passage reverts to a phreas with a deep canyon which is largely inaccessibly-narrow. It is at least 8m deep and there are a couple of points one could get in [2007-258-12-C].</p>
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<p>Climbing over a large boulder the passage widens due to a junction. The passage goes off left upwards [2007-258-13-A], as does the canyon, and another goes off left downwards [2007-258-14-A]. The passage continues steeply up-dip and gets bouldery. There are a couple of huge dropped sections of rock that have been undercut and split from the roof. On the left is a small alcove passage. Next a small cross-passage roof tube. Neither of these go. The draught remains strong, blowing out. The passage turns 90 left to go along the dip. A strongly draughting small passage comes in fro the right at the corner. Hedonism highway gets boulderier and closes down over the next 60m. This point may be quite close to the surface.</p>
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<h2>Crossword Passage</h2>
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<h2>Let's get Naked</h2>
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