The 2018 expedition is now only 4 weeks away. A few red tape problems have now been resolved and everything is set, including last minute equipment orders, turning over the shed looking for old equipment and herding everyone into position.
The latest edition of Descent (No 263 – Aug/Sep 2018) includes an article on Tresviso exploration, giving an overview of the recent work by the team, and is well worth seeking out a copy. Available from 4th August.
1st September to 15th September 2018 – main expedition dates
The expedition has a number of goals. The following are a few primary objectives:
Cueva del Nacimiento
Jurassic World – Terror Firma – multiple avens and climbs,
Pina Colada Bypass – a 3-10m rift leads off from the Pina Colada sump.
Joe’s Crack – un-descended shaft behind Death Race camp.
Teeth of Satan – Wet Aven – +30m aven with draft and calcite squeeze, requires enlarging.
Dan’s Big Room – unexplored section of maze in area of Dan’s Big Room and Winter Gardens
Parting Friends – a dive of the Parting Friends sump is planned.
Cueva de la Marniosa
Beyond Sump 2 – a dive of sump 2 and exploration beyond is planned
Pico Boro (SUSS)
SUSS are also involved and will take on responsibility for exploring either Flowerpot on the Pico Boro area.
FlowerPot – re-rigging and exploration of leads
Surface sweep and logging of entrances in Sara Depression (around camp)
Surface sweep and logging of entrances in Pico Boro area
Time and resources permitting there are a number of secondary objectives that will be attempted:
A large mine and natural cave complex in the Minas de Mazarrasa area. Pozo del Castillo series was explored to -292m depth in 1983, with either a howling draft or roaring waterfall beyond a constriction at the limit. The potential of the cave is significant but currently a collapse prevents getting to the end. Pozo Natacha series ends at -309m depth and is close to the same point in Castillo.
Pozo Del Castillo– shoring and bypass of rock collapse Castillo remains a major lead, if we can get past the blockage!
Pozo del Castillo – other entrances. FT16 entrance snow plug would appear to be the same blockage in lower Castillo passage. Snow plugs are reported further into the cave, so another entrance must exist!
Pozo del Castillo – surveying of Natacha upper series and locating possible surface entrance,
Pozo del Castillo – Natacha 1983 series. Attempt to get small, skinny person through current limit, otherwise derig and survey.
Valdelafuente / Sobra Valley
Re-locate draughting surface entrance on Valdelafuente, close to 80m aven beyond Sump 1 in Cueva del Marniosa,
T20 (Sobra Valley) – sandstone sink above Hall of the Mountain King in Cueva del Marniosa,
Yorkshire Inlet in Cueva del Marniosa. Exploration of col above aven (also close to T20),
Upstream series in Cueva del Marniosa. Large black voids above the streamway, if leads head to the South this is up the Valdelafuente
Sierra del a Corta
Above the furthest reaches 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-end to aid exploration at the far reaches.
T554 – large 100m shaft on the Sierra del a Corta, this requires some digging at the bottom,
Al2 – a drafting shaft not yet bottomed. Jurassic World in Nacimiento appears to be heading directly towards this site,
T294 Oh What Pot (La Gobia) – continuing passage,
Surface prospecting close to vicinity of Terror Firma in Nacimiento. Terror Firma is only 40m vertically and 200m horizontally from some parts of the surface in the Sierra del a Corta region.
Locate and survey General This may be another way into T87 Mazarrasa, bypassing entrance collapse. (most likely T88 Suerte or T89. T88 draughts strongly at junction inside)
Locate and descend FT43, this draughts strongly. It is almost directly above Boulder Chamber in T87 Mazarrasa and would provide bypass to collapse at T87 entrance.
Surveying of Nacimiento top entrance series. There are a number of unsurveyed and minor leads in the area,
Prospecting on Hoyo Oscuro and Hoyo Evangalista. Highest entrances on the mountain range.
Mine 2.32a – there is large unexplored level (with tram lines) leading to unexplored passage.
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.
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.
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.
Phil and myself embarked on another three day trip down Agua on Saturday 15th. With significantly lighter bags, the trip to Death Race was much quicker than the first time. I was able to appreciate the cave more on this trip, the trip to Death Race really is a good varied day of caving. We met Dan and Dave near Death Race heading out for a night of exploring.
The next day the plan was to push Joe’s Crack, the tight rift I had looked at previously. Phil decided this last was too tight for him, so it was up to me to bolt the traverse until it became wide enough to abseil down to the bottom of the rift.
The bottom of the rift widens slightly and the floor dips down below the traverse heading back towards Death Race. Part way along there is an opening into a much wider rift, estimated at 4m across, into which a pitch could be dropped, this was not done on this trip but is an open lead. The small rift turned a corner and chokes.
Returning up the pitch to get the survey kit turned out to be fairly unpleasant, due to the very tight nature of the pitch. Phil reaffirmed his belief that he wouldn’t fit, leaving me to do the survey alone. A shot down the large passage revealed it is at least 12.5m deep, so worth returning to by anyone keen to go down the tight pitch.
Left Death Race the day after in good time, including Phil doing the sump five times to get some video footage of it. Good effort, once is enough for me. Shame the video turned out to be pretty rubbish.
Thanks to Phil for the trip and making the necessary cups of tea throughout the day.
Sam and myself went down Agua looking for a traverse discovered by Derek the year before; the traverse starts at the top of Boulder Hall, it was not fully crossed so the far side was new passage. This excursion have me an opportunity to bolt and rig a traverse for the first time.
The traverse went well, the last section involved balancing off a bridge that seems to be entirely made of mud, I was glad of the bolts and rope at this point. At the far and was a constriction, I squeezed up this into the a small area. To one side there is a further squeeze and there appears to be a large section beyond it. Unfortunately we were out of bolts by this point, so we had to leave it for another day.
That evening we were discussing the day in the hut, and we had to decide on a name for the traverse. Chris suggested “Combine Harvester Traverse” as a few days before we had sung it down at Death Race, I had to teach Chris the words, and the name has stuck. Brilliant.
Thanks to Sam for the trip and his instruction on bolting.
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.
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!
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.
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.
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…..
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.
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………
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.
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.
The 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.
Normally 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.
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.
At 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!)
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.
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.