2017 Summary

Cueva del Nacimiento – Jurassic World – Terror Firma

The ‘final’ aven at the end of the cave was climbed to over 40m, a split in the aven was followed to a new height of 534m above the entrance, but closed down.  The second aven remains unclimbed and is ongoing 

Cueva del Nacimiento – Jurassic World – Pterodactyl Crumble

Another aven at the end of the cave was explored upwards before reaching horizontal passage for another 60m, then finally closing down. 

Cueva del Nacimiento – Death Race 2000 – Joe’s Crack

Initial constriction was passed and the passage continues down another 35m, to head of undescended 12m pitch.  The passage heads under the Death Race chamber, toward the Death Race pitches.

Cueva del Nacimiento – Teeth of Satan – Wet Aven

The Wet Aven was not attempted on this trip, in part due to 2 trips getting lost on the way to the far end and running out of time to climb.

Cueva del Nacimiento – Other

180m of passage found near Death Race passage.

A new aven (+30m) found near P Chamber in Death Race passage, continues.

Cueva del La Marniosa

Sump 1 was dived and the 80m aven beyond was climbed to approx. 47m.  The rock is extremely poor and no obvious continuations could be seen at the top of the aven, using powerful lights.

The Marniosa team diverted attention to trying to dive Sump 2,  an undived sump, discovered in 1987 and unvisited since.  A rather ambitious trip saw two cavers reach sump 2 and allowed one diver to pass sump 2 (30m long t 5m depth) to surface in stream passages.  A further 40m of cave was explored and still continues, before safety concerns forced a retreat.

 Pozo Del Castillo.

Pozo Castillo continues to be surveyed (2km +) and leads explored, attempting to bypass the 1987 snow collapse.  The rediscovery of FT16 and the lower snow levels, allowed further progress in the system, but a sump was encountered at -110m.

Pozo Natacha (a series of pitches in Castillo, rather than a separate cave) was pushed past it’s 1983 limit, down a tight right to the head of a tight 20m pitch.  This pitch head would need serious enlargement before further exploration can continue.

Other exploration

Torca del Carneros was (re)discovered and surveyed.  This lies on La Mesa, above Tresviso, and probably would be connected to caves draining away from Tresviso toward the San Esteban valley.

Fallen Bear was also rigged ready for further exploration in 2018.  The bulk of the cave is a steeply descending ramp, similar to Nacimiento, and contains a number of leads of potential.

Summary:

In total over 2km of cave was surveyed in 2017.  Exploration of Nacimiento continues and has now pushed the height to over 534m from the entrance.  A logistical challenge that is not proving to get any easier, despite fixed camps toward the end of the cave.  Trips to the far end require 4-5 nights of camping, and advanced camps at the far (far) end now need to be considered.  Passing the second sump in Marniosa is a major achievement and unexpectedly has surfaced in passage heading away from Nacimiento and into the mountain, possible towards a hypotheses trunk route that may also feed the upstream sump in Nacimiento.  The rigging of Fallen Bear, and discovery of some new leads, opens up further possibilities of closer deeper systems lying between Nacimiento and the deep potholes high on the mountain.

My first trip to Andara.. (Part One)

I first visited the Eastern Massif (or Andara) region of the Picos de Europa in 1996, as part of a small Lancaster University Speleological Society (LUSS) expedition. LUSS’s heyday had long since waned, but a very small contingent of students (and ex-students) were keeping the club going during term time and trying desperately to kick start the Tresviso expeditions in the summer.

70's caving
70’s caving

The last large scale LUSS expedition had occurred in 1987, but since that time the majority of LUSS cavers had moved onto bigger and greater things, so due to lack of information and resources, these 90’s expeditions concentrated on smaller scale objectives, without the manpower or time to embark on anything of the size of the 70’s and 80’s LUSS expedition (where 50+ cavers descended on the mountain for up to 3 months!).

For me, relatively new to caving, an expedition of any size was a grand undertaken and I would bore anyone who would listen about the great adventures I was sure to have, and the dangers I was sure to face. The reality was slightly different.

This of course was the 90’s, so although caving attire was not much different, the obligatory floppy haircuts and lumberjack shirts were the travel clothes of choice and crammed into our very own minibus, with the club name on the bus changed to Wancaster by some wag in Inglesport we embarked on what seems a journey of epic proportions. The minibus was long bench style with 1km of rope piled up in the middle and 2 people half sat, half lying down on the benches, the rest of the team in the front. Not the most comfortable of journeys and the initial travel down to Portsmouth must have taken a good 12 hours, sat in various stress positions, with a broken heater and no radio. However, as a newbie to the expedition scene, the talk of huge resurgence caves and unexplored passage was more than exciting and I couldn’t wait to get out to Spain!

The ferry crossing was then, as it is now, pretty horrible. I personally suffer from really bad sea sickness, that can only appear to be cured by far too much drinking, presumably ‘scientifically’ correcting the imbalance in my head caused by the motion, to one caused by alcohol. Needless to say the journey passed in a haze of stumbling stupor…. for 24 hours. One positive was that at some point during the journey I ended up in a posh cabin, next to the captain’s quarter, a fine upgrade from sleeping on reclining seats. To this day I’m still not sure how I ended up there.

The following day the ferry slowly docked in Santander, the motion sickness and hangover now no longer working together and I just needed to get off that boat! Eventually I staggered back to the minibus and the other expedition members and finally we landed on Spanish soil. A times round the first roundabout before Sean (as designated Spanish driver) got the hang of driving on the wrong side and we headed off South towards the Picos.

The drive up through the Picos is always a fantastic view, the mountains getting larger and larger until you are driving up through huge gorges, with very large drops on either side. The roads are a lot safer now but even in 1996, a lot of the side barriers were made of wood and missing large sections where the snow had taken them off down the side. In a few places, far below, you could see often see cars that had been taken over the edge as well!

At Poncebos and the Cares Gorge (for those more interested in the Ario Caves Project) we turned off to the East and continued to climb up into the mountains, along further windy roads until the mountains level out on an obvious plateau and the village of Sotres (highest village in the Picos). Above the village the main mountain range of Andara reaches around 2200-2300m high and it’s only a few miles further that the ‘crossroads’ is reached. (The crossroads now, is actually a parking space for tourists and mountaineers, but at the time it was a mud turning circle, marking the junction between a dirt track to Tresviso, a dirt track to Bejes or a rocky track to the higher mountains.

The 1996 expedition was not actually based in Tresviso. A small camp site a couple of km’s up the mountain track and down into a meadow was the best site for pitching tents and having a suitable water source. The amount of equipment in the minibus meant 3 trips back and forth back were required and by the time tents were pitched and bags unpacked it was getting quite late. A quick meal (can’t remember what) and off to bed with the exciting promise of caving the next day!

Map to camp, still used today
Map to camp, still used today

The next day I had my first taste of expedition caving. The Cheese Cave, as it was called, was about 200m down the valley in a wooded clearing. First discovered in the mid 1980’s, it was a -120m deep cave with a drafting rift at the very end. The cave sat in the middle area between the resurgence cave, Cueva del Agua and the notorious higher altitude deep pot hold caves, such as Sima 56 (at that time the deepest in the Andara region at -1169m). That was pretty much all I knew about it, apart from a notorious squeeze near the start of the cave, called The Constriction of Doom, followed by the Corkscrew (probably of Doom as well). I’m not sure why cavers need to name parts of the cave with such hyperbole, maybe too much Harry Potter reading, or in the 90’s too much Xena, but it usually sets my mind racing about how bad it must actually be to earn such a name.

The passage of time (not another part of the cave…) has dulled what I can remember of that constriction and it has long since been widened by later expeditions, but it was pretty tight, think the Blowhole in Gaping Gill or Birthday Squeeze in Swildons, but 5m long, lying flat out on one side, starting in a puddle of water.

Constriction of Doom, Cheese Cave (1995)
Constriction of Doom, Cheese Cave (1995)

The Corkscrew (of certain death) was actually more intimidating than the constriction, starting in a small chamber full of shattered rocks, that appeared to be the only thing holding the entire roof up. In the centre a tight vertical drop requires an acrobatic sit / squat / twist combination, turning onto ones back and then rolling sideways to face the front, all of this with no space to turn head and look below.

The Corkscrew, Cheese Cave (1995)
The Corkscrew, Cheese Cave (1995)

A further 5m crawl then leads to the first pitch and the start of some ‘easier’ caving. A team was already in the cave from earlier in the morning, so all pitches were rigged. This was before easy access to drills andthrough bolts so all the pitches had a generous amount of natural rigging from any available rock, and in some cases mud, that provide a good anchor point.

The first couple of pitches are typical of the type of potholes in the area, being rather tight and rifty, with a lot of old decayed rock and calcite hanging precariously all over the place. In particular, the 3rd pitch Sword Pitch, starts for the first 5m over a hanging curtain of old calcite that rings with every touch. Even now the pitch requires a generous amount of rope protectors to rig with any sense of safety. Further pitches follow, but now an obvious draft is encountered, coming from lower down in the cave. At the Waiting Room, a low crawl leads off, which requires removal of all equipment, before popping out into a keyhole shaped passage with a cold breeze coming through a tight, impassable rift. It is at this rift that the previous expedition had spent many hours hammering away with a lump hammer and again this year the intended focus of our effort.

Out team of three spent a few hours hammering away, until the smallest member could just squeeze the top part of her body through the rift, tiredness and coldness prevented much further work and we exited the cave.

As my first taste of expedition caving, it was a nice gentle introduction. My second lesson was immediately after exiting the cave. Bearing in mind the cave was only 200m from the camp, the next 24 hours were spent lost in the mountains with no water and only a handful of alpine strawberries for food…..

Sword Pitch, Cheese Cave (1995)
Sword Pitch, Cheese Cave (1995)

Sunday 30th April 2017 – Cueva del Nacimiento

 

A surprisingly comfortable nights sleep was had by everyone, the new sleeping bags, although cheap, proving to work quite well.  The temperature of the chamber was around 7 degrees all night, which helps.  A lot warmer than other camps in the cave.

Over muesli some debate was had on whether to explore a bit of new passage, near camp (Joe’s Crack) but ultimately we decided to strike camp with a view to get out in time for the bar and guarantee a full Monday for any other plans.

Camp equipment was catalogued, packed and stored ready for July and then we started the long slog out of the cave, with three lightly packed bags between the five people (2pm). We gradually split into smaller groups, myself and Gareth at the front, for all of 20 minutes until we got slightly lost in a boulder choke.  Hannah soon turned up and pointed out the obvious way on.

The way down the ramps is a lot quicker and we arrived back at The Hall of the Green Domino in just over an hour.  BJ had some cheese and chorizo wraps stashed here, which was a nice boost over the rather bland muesli earlier.  Once up the muddy pitches into Dan’s Big Room the cave seems to feel it’s going downhill, so a further boost to morale.  Consort Hall is the next major stop and we all reconvene.  All we are making good progress there is rising concern that we won’t make it out to the bar in time for dinner.  Myself and BJ attempt to race ahead but are soon caught up by Chris at Flake Pitch who then runs off to get dinner in, and BJ not far behind him.

While waiting for my turn up the pitch, Hannah turns up, having fallen and possibly twisted her ankle, is now approaching my preferred caving speed….  We cave for a bit, with me still running behind and upon reaching the Sump, realise we haven’t  seen or heard from Gareth in a while. I move onto the next awkward bag obstacle while Hannah waits for Gareth.  It’s not long before they both arrive and we get the bags through the Hole in the Wall.  Gareth had gone the wrong way down a pitch and had a slight fall, hence slight delay.

Son of Ramp
Son of Ramp

My entire body is cramping at the moment but I know it’s nearly all over.  A few more abseils lead back to the big 22m up pitch ( needs a name!) and then back into Boulder Hall.  It’s all down hill from here, down the ramp and into the entrance series.  Exit at 8:00pm.

Only an hours hike up the gorge left to complete………

Saturday 29th April 2017 – Cueva del Nacimiento

A leisurely morning was spent packing, avoiding leaving and, for some, three breakfasts.  Eventually everything was packed and excuses had run out.  The 500m descent down the gorge was its usual enjoyable self but due to the time of year a lot less tree cover, meaning we could see a lot more of the cliff sides and panoramic views.

However all too soon we arrived at the bottom.  Gareth had already pumped the dinghy up, so no further procrastination allowed.  Into the cave at 15.30.  Promptly I decided I didn’t want to be there… I’m convinced the entrance series gets harder each year.  It’s dark, water thundering about everywhere and seems to take forever to get anywhere.  Water levels up slightly, but traverse line still up across waterfall, with only one slight wear point.  I decided to clip in for safety, and promptly fell in head first, great cold and wet right at the start.  Thankfully BJ did exactly the same so I didn’t feel totally stupid.

The Ramp - Cueva del Nacimiento
The Ramp – Cueva del Nacimiento

A lot of teamwork required to get our rather large tackle bags up and down the climbs but slowly we made progress.  At Clapham Junction equipment was left in situ (waterproof first aid, 4 man bothy, 1 AV tackle bag) as this point is the most suitable to sit out a flood in the entrance series.  The rescue kit is usually a bit more comforting, but we couldn’t carry everything this time round.

entance to claphamThe character of the cave starts to change now, starting with The Ramp, a 70m steep climb, generally at a 45 degree angle.  More up and down climbs, continue until Boulder Hall, a large chamber. At the top of the chamber a few more climbs up lead to a 22m pitch, dropping down to the start of a large impressive passage that steeply rises up via a number of up pitches.  Normally, you start to hear a roaring noise, that sounds like water, but is the rushing of air through a constriction.  This time it’s ominously silent… If I’m lucky it’s blocked and we can turn around and go home.  No such luck and we continue down through The Hole in the Wall and more climbs up before we reach the Sump.  Water levels are normal and we chain up the five tackle bags and quickly pull them through so we don’t spend anymore time that strictly necessary in the water.

clapham to holeNormally my spirits would start to lift as we are getting close to Consort Hall, one of the old underground camps, however as our main objectives are in the Death Race 2000 area, camps further in have become the norm and now Consort Hall just reminds me that we are still only a third of the way into the cave!  We stop for some lunch (at 8pm) before carrying on.

hole to consort

The next hour and a half of caving is probably some of the nicest passage in the cave, big and dry with lots of old formations.  This is soon forgotten at the next set of down pitches, from the top of Dan’s Big Room a series of muddy pitches, prove both frustrating and unnerving in equal measure.  The ropes were placed on the 2011 expedition and have become more and more muddy and fast, plus all personal equipment is now of the same mud colour, so clipping into the right rope becomes a critical requirement.

conosrt to danAt the bottom of the pitches The Hall of the Green Domino provides a definite landmark for the start of the next challenge… Death Race 2000 is now approx. 250m above us, up the aptly named Beasts Ramp, Satan’s Ramp and Hellsmouth.

By now I’m feeling pretty tired, those training days at the spa and facial massages seem to have been the wrong choice, maybe more caving would have been the better option.  However, once more my spirits are lifted, BJ looks positively white and slumped in the corner.  He might be feeling worse than me.  Chris, of course, looks like he only started the trip 5 minutes ago.

By now we have sent Gareth and Hannah on to Death Race, the only water source in the area is down a broken 70m pitch that can take a couple of hours to manoeuvre water carriers up.  We are all going to be dehydrated and wanting food later and in the morning, so it seems a sensible idea to do it now rather than post sleep…

These ramps were first climbed in the late 80’s by members of the SWCC, all free climbed or hand bolted, a massive achievement given the scale and conditions of the climbs.  We make steady progress up the ramps, again the condition of the ropes leaving a lot to be desired, either muddy, super fast, super thick or, in one case, a dynamic rope meeting back to 1987, that was found a few years back and put back into service (really needs replacing!)

dan to dr

Finally the pitches up stop and we are back on relatively flat land.  It’s been a few years since I was last in the Death Race area and only small parts look familiar.  A few navigation issues delay us slightly but soon we can hear voices in the distance.  We reach The Death Race chamber at around 2:30am, a trip in of around 11 hours.  The kettle is already on and it’s time for as cup of tea and dinner.  Equipment is then unpacked (the reason we came) and everyone finds a comfortable place to sleep. I don’t have my usual underground camping clothes this time round, but a rather haphazard collection of; base-layers (20 years old), woolly hat (found in gym), bin bags (for wet feet) and a pair of Ron Hill trousers, which should only see the light of day, if that light is down a cave.

 

A day setting up camp

After a 30hr or so trip to deathrace we’ve stocked camp with enough gear for 5 persons and approx 50man days worth of wet rations and camp gear. Come July all that will be needed is exploration and personnal gear.
A good trip without incident save a few navigational errors and out just in time for a bit of food and beer at the bar.

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BJ enjoying a cuppa
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Stall near PI chamber
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More stall ‘can’t remember where’
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Phil getting changed.
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Chris, H and I waiting at ‘hole in wall’
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Life at camp
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More stall near PI chamber
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Enjoying a cuppa at camp
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Like moths in the flame

 

Tresviso 2017 – the May Bank warm up

Over the weekend of 28th April to 2nd May, a team of 5 cavers are going out to Tresviso with the brave (or foolhardy) plan to set up the Death Race 2000 underground camps, ready for the summer trip.

Die Hard Traverse Chris Jones 2016
Die Hard Traverse, Cueva del Nacimiento – Chris Jones 2016

Over recent years the time and effort spent getting people and equipment to the furthest reaches has caused significant lost time that would be better spent pushing leads. A team of 4 people, with large packs of underground camping, drills and rope can take anywhere from 12 to 18 hours to get to the Jurassic World section of the cave. However, a team with minimal equipment can get to the Death Race camp in around 4 hours.

In 2016 a number of ‘base camp’ items were left at Death Race, including sealed food and sleeping bags. The May trip plans to take some more equipment in to be left in situ ready for the summer trip.

The trip will only really have 3 days in the field, 2 of which spent underground in Nacimiento. Weather is currently good, with minimal snow over the past few months and only light showers of late.

Updates to follow, where possible….

Phil Walker, Chris Jones, Hannah Moulton, Gareth Davies, Alex Burton-Johnson

agua surface overlay
Cueva del Nacimiento – Google Earth Surface Overlay (2016)

Tresviso 2017 Overview

Tresviso 2017 Overview

The latest Tresviso Caving Expedition is planned for this summer and once more a blog will be attempted. Additionally, a long weekend pre-expedition trip is planned.

Looking North from San Carlos (Andara)
Looking North from San Carlos (Andara) – Phil Walker 2016

Overview & brief history:

The Picos de Europa is a range of mountains 20km inland from the northern coast of Spain, forming part of the Cantabrian Mountains. It consists of three main areas, the Central, Eastern and Western Massifs. It was the Eastern Massif that drew the attention of Lancaster University Speleological Society (LUSS) in the early 1970s.

location

The early years were spent pushing Cueva del Nacimiento (Cueva del Agua) located at the foot of the mountain range. Over the years this was pushed to around the 11km and +300m mark, but after several years the cave was abandoned as the major routes sumped and no continuation could be found. LUSS turned their attention to the Andara region higher up the mountain range and sought caves that would drop into the Nacimiento system and create a record-breaking 1500m through trip.

They eventually found a number of deep caves around this ‘top camp’ area. Sara, Tere, Flowerpot and the -1169m deep Sima 56 (at the time one of the deepest in Spain) were all pushed to respectable depths.

Many years were spent pushing the top camp systems but the way through remained elusive.

The idea was always to connect Sima 56 through to Nacimiento, a through trip of around 1500m vertically and ~5.9km horizontally. Exploring Sima 56 downwards is an incredibly large undertaking (approx. -1129m deep, lots of pitches).  Upwards from Nacimiento will also be difficult, the furthest point in 1986 was a +200m ascending ramp, followed by some avens with surface debris. Depending on what you look at, the difference between Sima 56 and Nacimiento is about 3km, but they have overlapped height wise.  Some of the known undescended shafts on the Sierra del a Corta are right above the furthest point of Nacimiento.

Naciemiento Streamway (2016)
Cueva del Nacimiento Streamway – Russ Brooks 2016

Recent expedition activity

In 2005 a small SWCC trip found a number of undescended shafts on the top of the Sierra del a Corta. Al2 remains unfinished.

In 2009 a joint SWCC & SBSS trip further explored Cueva del Entre Cuetos, located on the Sierra del Corta. The 1996 limit at -100m was passed and the cave extended down a number of new pitches to an immature stream way that may repay a further visit

In 2010 SWCC and SBSS spent 10 days examining leads around the Sierra del Corta and Valdeladiezma, including a number of promising draughting shafts. (T69, T507, T504). Torca Septrin, on the Pico Boro, was also revisited and extended for a few more metres and remains an ongoing project.

In 2011 SWCC Cueva del Nacimiento was successfully bolted and re-rigged all the way through the cave and up to the current limit of exploration in the final Death Race 2000 chamber. T69 was investigated further with some digging revealing the head of an un-descended shaft.

In 2012 SWCC spend 3 weeks further exploring Cueva del Nacimiento, including a successful dive of the Upstream Sump, not visited since 1986, extending the sump further and deeper. Death Race 2000 was climbed and a series of pitches descending back toward stream level was discovered.

In 2014 SWCC and others further explored leads in Cueva del Nacimiento and revisited Torca Septrin

In 2015 the Tresviso Caves Project spent 2 weeks exploring Cueva del Nacimiento and discovered new extensions above the Death Race 2000 chamber (Die Hard and Jurassic World). Additionally, a new large sump (Pena Colada sump) was discovered at the bottom of the Death Race steamway

In 2016 the Tresviso Caves Project spent 2 weeks exploring Cueva del Nacimiento and climbed a number of avens in the Die Hard – Jurassic World area. Additionally, Pozo Natacha (in the Mazarassa mine area) was rigged ready for the next expedition.

Previous reports are available here: http://www.trevisocaves.info/reports.html

The Wet Aven (Nacimiento)
Arwel Roberts on the “Wet Aven”, Teeth of Satan, Cueva del Nacimiento – Joe Daniels 2015


The Plan

The 2017 expedition will be undertaken over 2 weeks from July 8th to July 22nd 2017.

The expedition has a number of objectives. The following are a few primary objectives:

Cueva del Nacimiento – Die Hard – Jurassic World

Various Leads

  • Multiple climbs in Jurassic World
  • Multiple climbs in Die Hard

Cueva del Nacimiento – Pina Colada Bypass

A 3-10m rift heads off from the Pina Colada sump

Cueva del Nacimiento – Teeth of Satan – Wet Aven

The 2017 expedition partly continued climbing a promising aven, part way up the Teeth of Satan ramps. The aven requires completing with a possible continuation at the top.

Cueva del Nacimiento – Passages above Dan’s Big Room

Unexplored sections of passage near the 1970’s Terminal Chamber.

Middle Camp

Approx. 200m above the furthest point in Nacimiento is the Sierra del Corta. A heavily wooded area with a number of promising leads, that could potentially drop into Nacimiento and provide an easier route into the back to aid exploration

Andara (2016)
Minas de Mazarassa, Andara – Russ Brooks 2016

T554

The 2014 trip re-discovered a large 100m shaft on the Sierra del a Corta. Another good central location for dropping into Nacimiento, this requires some digging at the bottom

Al2Discovered in 2005. A drafting shaft not yet bottomed. Jurassic World in Nacimiento appears to be heading directly towards this site

Secondary Objectives: 

Time and resources permitting there are a number of secondary objectives that will be attempted:

  1. Pozo Del Castillo / Natacha. Reinvestigate the possibility of resuming exploration of the Castillo system, currently at -293m .
  2. Locate draughting surface entrance, close to 80m aven beyond Sump 1 in Cueva del Marniosa
  3. Upstream series in Cueva del Marniosa. Large black voids above the streamway.
Crystal Spear Cave (2016)
Martin Groves, Crystal Spear Cave – Jason Gotel 2016