Pool Sink to Top Sink

Pool Sink Entrance Series

The cave starts as a crawl in a small tube. After the initial left-hand bend, an awkward left-then-right double bend is reached; this is best approached on the right-hand side, flipping over in the first bend; tackle is best pushed in front.

Ahead the way becomes easier, as a wide low crawl, gradually rising to hands and knees crawling and then stooping passage. The passage becomes more rift-like, before a 2.5m climb down into a small chamber where small inlets enter. Ahead a meandering stream passage, with a larger inlet entering from the right, soon reaches the first pitch (P17). The pitch descends past a ledge to land on a ledge just above the streamway.

• 22m rope; back-up to bolt; traverse from bolt; Y-hang off two bolts; optional deviation from bolt 3m down.

[Upstream leads to Magpie Grotto]; downstream leads towards Holbeck Junction.

Pool Sink streamway

Note: sections of the lower streamway flood to the roof in wet conditions.

Downstream from the first pitch, a pleasant streamway reaches the second pitch (P8) after about two minutes.

• 16m rope; backup to large thread on previous corner; traverse from bolt high on left wall; main hang from bolt high on left; deviation with short sling from thread 1m down. [An alternative route traverses over the pitch and descends further downstream.]

Ahead, a couple of short climbs lead to the third pitch (P8).

• 12m rope; bolt for traverse; two-bolt Y-hang.

Two minutes caving down the streamway, with a couple of deeper pools, reaches the fourth pitch (P10). The pitch can be rigged direct, but this way is very wet and not recommended; better is to traverse up to the right, following the obvious line of bolts.

• 21m rope; five bolts for traverse; two-bolt Y-hang.

The pitch lands on a ledge by the waterfall. The stream flows along a tall rift passage with short climbs, T-Piece Passage. A clamber over rocks leads to a step up onto a shelf where the water is lost. A short rift passage leads to a clamber over more boulders into a chamber where the water is regained. Ahead, striking horizontal flakes of rock protrude from the walls. A short section of stream leads to more boulders. These boulders mark a four-way junction, although two of the ways are unobvious.

• [To the left, is a narrow bedding plane squeeze. Beyond, to the right is Eccles Bypass, and to the left is Lower Borehole.]

• The easiest way to Holbeck Junction is a dry passage starting at a shelf on the right, 2m above the stream. This soon enters a chamber. To the left is Upstream Green and Smelly Passage, with connections to Spiral Staircase Passage in Wretched Rabbit, the Borehole, Slit Sinks and New Slit Sinks. To the right is Green and Smelly Passage to Holbeck Junction, leading to Holbeck Junction.

• [Alternatively, straight on from the four-way junction intersects Green and Smelly Passage just upstream of the chamber mentioned above.]

Green and Smelly Passage to Holbeck Junction

From the confluence of the Pool Sink and Spiral Staircase/Borehole routes, the passage continues as walking passage, with the water flowing in an oxbow to the left. After two minutes, a pool is reached at the junction of two joints: turning left then immediately right, a stoop leads into a 6m high chamber with the stream flowing from the right. A few steps downstream, a dry passage to the right provides the easiest way to Holbeck. [Continuing ahead, a wet crawl leads to where the stream disappears ahead. A dry crawl to the right leads to the main streamway, where it hits a choke.] Taking the dry passage leads to a step over boulders, followed by a gentle descent to Holbeck Junction.

Holbeck Junction

Holbeck Junction is a major junction in the upper Easegill main streamway. The junction itself is often dry, as the stream runs in an oxbow.

Several routes lead from Holbeck; in clockwise direction:

• Downstream soon leads to a choke; a crawl to the left provides an alternative route to Green and Smelly Passage.

• Ascending a boulder slope to the right of the stream provides routes towards Stop Pot and Gypsum Caverns.

• Upstream is Thackray's Passage leading towards Top Sink with a connection to Boundary Pot.

• To the left of the stream, behind a 2m high boulder, is a dry passage leading to Green and Smelly Passage, with routes to Pool Sink, Spiral Staircase in Wretched Rabbit, Slit Sinks and New Slit Sinks.

Thackray's Passage, from Holbeck Junction to The Assembly Hall

Upstream from Holbeck Junction is Thackray's Passage. The passage is normally dry at first, but soon meets the stream. Easy walking passage passes nice stal formations. Soon the stream is lost, and the passage enters an oxbow. Easy walking and stooping passes several gour pools. Soon the passage becomes smaller. A crawl through a window, past a stal "grille", regains the streamway.

[Downstream becomes very low.] Upstream is a pleasant well-decorated streamway. The streamway is knee-deep in places in normal conditions, but is sometimes deeper, and floods to the roof in very wet conditions. After about four minutes, it is possible to step up into a calcited oxbow above the stream, the White Way. [Continuing upstream soon reaches a very dangerous boulder choke.]

The oxbow soon opens out at the bottom of a 10m diameter chamber. At the top of the chamber is a 2.5m climb up, with an in-situ handline (March 2015). At the top of the climb, crawling to the right leads to an ascent up boulders to a window at roof level [or an alternative route to the left.] The window opens into a chamber, The Assembly Hall.

• To the right, a handline marks the climb up into Easter Grotto.
• Ahead, a rift is the start of the route towards Nagasaki Cavern.

The Assembly Hall to Nagasaki Cavern

From The Assembly Hall, a rift passage appears to be blind after a few metres. However, there is a way on via a climb up to a window 3.5m above the floor: an initial straddle across the rift reaches some good footholds, 2m up, which give a decent but precarious-feeling stance; from there, a final climb through the window reaches a mini-chamber. From the mini-chamber, a constricted upwards-sloping slot opens into wider passage. [Turning right, a traverse along the top of a rift provides an alternative route into Easter Grotto.] [Turning left then left again, a crawl leads to a descent back into The Assembly Hall, which needs tackle.]

From the top of the slot, turning left leads to a step across a pot in the floor at the start of a rift. The rift continues as easy walking. After a couple of minutes, the rift passes stal bosses, and then opens out at the start of a chamber. The chamber ascends over muddy boulders, to the top of Fairy Steps: an initial easy climb leads to a muddy polished traverse to the left followed by a short awkward climb down to the floor. Ahead is Nagasaki Cavern. A large bouldery passage passes a rope up an aven and an inlet to the right, and reaches the base of the cavern.

• A hole in the bottom of the chamber descends into Far East Passage, leading towards Boundary Pot.
• Continuing ahead is the route towards Limerick Junction.

Nagasaki Cavern to Limerick Junction

From the base of Nagasaki Cavern, a sandy chute leads up behind a very large boulder to the left; this leads to a climb up through boulders. [Alternatively, the steep slippery slope to the right reaches the same point.] Another sandy chute behind a very large boulder to the left leads to the top of the chamber. Clambering ahead over boulders reaches a hole between boulders. The way on is a descent of 1.5m onto the first of two boulders jammed in the rift. Doubling back leads to a climb down 2m into a boulder choke, from where doubling back again exits the choke.

Easy muddy bouldery passage reaches the lip of a drop. This can be avoided by stepping left to a 1.5m climb down into a rift. A traverse to the left crosses the stream and leads to a 1.5m climb down into a walking oxbow. Immediately ahead, a bold step, The Bridge of Sighs, leads back across to the left side of the stream chasm. Round the corner, a step back to the right-hand side of the stream and a traverse to the right leads into an oxbow passage.

Round the next corner is a chamber with the stream about 4m below, and an inlet entering as a waterfall. A traverse on the right crosses the inlet; a step to the left then crosses the main stream as it descends a small waterfall. A 1.5m climb up onto a ledge leads to a junction in an oxbow. [To the left leads back to the chamber.] To the right from the junction leads to a slope down into a chamber. From the chamber, the climb up ahead should be avoided. Instead, the way on is a low crawl at floor level by a pointy rock, under a large chockstone. The crawl soon leads into a chamber. Ahead reaches the stream, which falls 0.6m down a pot.

Easy streamway crosses a mud bank and reaches a right-hand bend. The climb ahead here is best avoided; instead, a short section of stooping streamway leads to a left-hand bend. [A crawl in the stream leads on, but can be bypassed.] Ascending the side passage to the left leads to a junction: [to the left leads back to the climb avoided earlier;] clambering up to the right over muddy boulders leads to a muddy oxbow. The oxbow descends to the steam, and then continues on the other side. [An alternative route follows the streamway below the oxbow.] When the stream is regained, the continuing oxbow should be avoided [since it leads to a foolhardy descent.] Instead, stooping stream passage soon widens at Limerick Junction.

• To the right, the muddy bouldery slope is the start of Limerick Passage.
• Ahead, a crawl is Bradshaw's Passage leading to Top Sink exit.

Limerick Junction to Top Sink Exit

Note: the pitches are wet, and become impassible in very wet conditions.

Bradshaw's Passage is an easy crawl, which rises to an easy meander. After about four minutes, a junction is reached. [To the right is Wisdom Tooth Passage.] Ahead is Penknife Pitch (5m), which needs pre-rigging.

Above Penknife Passage is πr² Passage. The passage is a meandering streamway, which can mostly be tackled upright, with the occasional crawl. Larger cavers will have to crawl for longer, and will find the passage considerably harder. After five to ten minutes, Walrus Pot (18m) is reached, which also needs pre-rigging.

The top of Walrus Pitch is an "eagle's nest" ledge, from where a lined traverse leads into the stream passage. The passage is meandering, mostly sideways walking with one short crawl. After about four minutes, a junction is reached. [To the right is a dry passage.] The way on is to the left, where walking passage soon leads to a chamber. A short crawl and stooping passage leads into a small drippy chamber. An ascent through boulders leads to the bottom of the entrance shaft. The shaft is 4m deep, scaffolded and drippy.