Pegasus Caving Club
aka Pegasus Club Nottingham
Panama 2017
Report of the 2017 Anglo-Irish expedition

James Cobbett climbing out the top entrance of Cueva Del Búho, “Owl Cave”: Photo Dig Hastilow.
Contents
Acknowledgements
Panama 2017; overview
Caves and Potholes near Pueblo Nuevo village
Cueva Del Búho
Cueva Del Corazón
Cueva Piladores
Bat survey Cueva Pueblo Nuevo and area
Phase Two; Lago Bayano to Yaviza, in search of Limestone
Interlude; Pozo Azul & Boca du Tulu
Phase Three, Cueva Del Rio Aligandi and area
Examples of speleothem natural deterioration
Fauna record within Cueva Del Rio AligandiCueva Del Puente Natural
Appendices
Archaeology of the Pueblo Nuevo area
Notes on Survey Data, Map Datums and Position Formats
Health
Geology
Cave data recorded area Pueblo Nuevo, Lago Bayano
Personnel

Base camp, 05:45. Pueblo Nuevo, Lago Bayano. Photo Roger Day.
Acknowledgements
The passion to explore the underworld remains as powerful today as it did a half century ago when most of the Anglo-Irish Team first ventured into the Realms of Darkness. What then was considered no more than an obscure, idiotic pastime, indeed a regular target for public derision, is now widely reproduced through various social media for worldwide narcissistic entertainment at large; perhaps a good thing, perhaps not. The world of caves is however recognized for the science it produces having impacts on origins of life forms both Human and other. Those cavers who led exploration have through their determination and discoveries provided valuable advances for those of us who follow effectively bequeathing knowledge and achievements often obtained with limited resources and, by today’s standards, basic equipment. As the Teams project has progressed other interests have broadened the scope of these trips. Once sponsorship was a common support to so many expeditions of the 1960s and 1970s, today such enthusiastic assistance has regrettably ebbed. It’s understandable; these modest expeditions to search for cave throughout Panama don’t attract headlines. Support for Panamanian trips has therefore been scant, funded almost entirely by the members. The Speleological Union of Ireland has regularly supported the Irish contingent but over five visits this financial assistance too has dwindled; likely the direct result of the severe financial difficulties present throughout the whole of Ireland. The information within this report was assembled from effort expended by the Team members with the full intention of it benefiting all who have an interest in pursuing exploration in Panama. Permission and due accreditation is required if wishing to republish its contents.
On behalf of the Team I would like to sincerely thank the following, James and Marilyn Cobbett yet again for their overwhelming hospitality and friendship, James for his enthusiasm and Marilyn for her boundless patience having us as guests, talking endlessly of caving, to Keith Christenson for his kind permission to reproduce his survey of Cueva Piladores, for identifying the Fauna of Cueva Del Rio Aligandi and providing valuable guidance to my editing, To each member of the Team for their extensive good humour and constructive outlook in the face of difficulties; of particular note Hastilow and Day who both made significant effort to accurately record the trip in photographs without which this report would be a lot of text, and for proof reading this compilation, the Speleological Union of Ireland, the Saila, (Elders), of Ailigandi Comarca for their permissions to explore the region, Nelson Smith, Guide, for his good nature and professionalism, also to guides Divaldo and Christopher for their support and good humour, the Pegasus Club Nottingham for hosting the freely available Panamanian Cave Database on the website, and last but never least Pauline Cronin for her continued unwavering support.
© Pat Cronin
Doolin
April 2017
Caving in Panama 2017
This is the sixth report of cave exploration throughout the Republic of Panama commencing in 2005; compiled from input provided by its members. There remain extensive tracts of Panama that have no accurate geological information, the absence of limestone data forms part of the Panamanian cave research program. Hence the focus has been to pursue rumoured caves in the hope both limestone and caves are encountered. The terrain and conditions demand significant physical exertion; the age group of the Team is between the mid 50s and upper 60s. Each appreciates that whilst they possess a consuming passion to pursue cave exploration their bodies repeatedly acknowledge the aging process informing the member with occasional aches and pains. New blood is sought to continue this project, exploring the pristine jungle environment of Panama recording its caves, geology and archaeology. To this end, new blood, Austin Garrido has adopted the task, support and research data accumulated by the Team over their twelve years of nationwide activity. For the 2017 trip, among other areas, the team had specifically planned to revisit Cueva Del Rio Aligandi searching for limestone further inland. To then investigate a rumoured cave, Pozo Azul, near Penonome. Survey the geology east from Lago Bayano Bridge to the border town of Yaviza, Darien, and, if time allowed, investigate the mountainous region of the Rio Teribe west of Almirante, Bocas Del Toro. Close to departure the team were informed that thirteen scientists from the Smithsonian Tropical Research Institution, based in Panama, and two Peace Corps volunteers had expressed an interest to Austin to study the Pueblo Nuevo area on the southern shore of Lago Bayano, further to his discovery of some pits. Plans were adjusted to allow this group to join us at Pueblo Nuevo to share our prior knowledge of this area, and to recruit some young blood to the cause. It is, however, regrettable though individuals from seven different countries went to Pueblo Nuevo this did not include any Panamanians.

The above image illustrates the three principle areas of interest.
The Republic of Panama is an isthmus connecting Colombia, to Costa Rica. Though relatively young in geological terms its formation by tectonic activity effectively closed the gap between the North and South American continents causing the extant ocean currents to alter course thereby forming the present structure of the Gulf Stream whose warm waters circulate northward providing Northern Europe with its temperate climate. Accessing the interior of Panama can be problematic, the Pan-American highway allows for swift movement along the spine of the country but once off this route the minor hard top roads swiftly deteriorate to dirt tracks, which become difficult to traverse when wet, particularly during the rainy season between April and December. The dry season though enjoying less rainfall does remain quite wet. Therefore an off road vehicle or boat, is required for protracted exploration of the interior to get to where the walking begins.

The Anglo-Irish Team, left to right, Pat Cronin, James Cobbett, Roger Day and Dig Hastilow.
(Totalled accumulated years of active cave exploration =194).
The original plan was altered to accommodate the Lago Bayano study group; therefore the Team adjusted the research design of the five week expedition into three phases.
Phase One. To amalgamate with the invited international group at Pueblo Nuevo, Lago Bayano to investigate a reported sixty foot pot.
Phase Two. To investigate the geology from Lago Bayano Bridge south-east to Yaviza, Darien Province.
Phase Three. To return to Aligandi River Cave to complete the survey of the cave and investigate the adjacent geology.
Phase One. Lago Bayano.

The Anglo-Irish Team with international Smithsonian Students, friends and locals.
On a previous reconnaissance trip Austin had reported encountering a number of twenty metre deep pots near the village of Pueblo Nuevo, using a plumb-line to confirm depth. The discovery of these deep pots was the catalyst to rearrange the Anglo-Irish Team’s itinerary. The international personnel covered several scientific disciplines including Lepidoptera and of particular interest, Bats. During the time spent at Lago Bayano the group swelled to eighteen members coalescing into their various areas of interest. Nationalities represented were Bulgarian, Costa Rican, British, American, Polish, Irish and French.

Southern shoreline of Lago Bayano. Photo Dig Hastilow.
Caves and Potholes near Pueblo Nuevo
Members of the Bulgarian - Costa Rican Teams made the first descent of the reported 20 metre pot, finding years of domestic refuse at its base. Pushing beyond this pile of debris three passages were followed until becoming too tight or choked, this was surveyed on a later trip by the explorers. Its elevated location and silt deposits demonstrate that whilst this remains an active water course it is subject to regular flooding. The pollution potential of dumping domestic refuse in caves, into a possible source of drinking water, was respectfully conveyed to the community. Other adjacent sites were investigated by the Bulgarians and Costa Ricans; we await their contributions to the expedition report.
The Anglo-Irish contingent explored and surveyed several minor sites near Cueva Pueblo Nuevo and two relative major sites further inland from Pueblo Nuevo village, (Appendix 5). One particular site barely fifty metres from base camp was not descended immediately as the team opted to firstly pursue the discoveries furthest from base camp. At the bottom of the well decorated four metre deep hole passages are visible heading off both north and southward. The significant finds being Cueva del Búho, (Owl Cave), at 103 metres and Cueva del Corazon, (Heart Cave), at 285 metres the longest finds in the area for 2017. Of particular importance was the discovery by Austin Garrido of a second burial cave around a kilometre from Base Camp which contained the skeletal remains of several individuals. Site data was not recorded; the remaining time did not allow a further visit.

Hole 1, fifty metres from base camp, remains unexplored, (Feb 2107). Photo Dig Hastilow.
Cueva Del Búho
Province Panamá
UTM 17p 0742884 x 1003281
Length 103 metres
Depth 19 metres

Cliff entrance of Cueva Del Búho, “Owl Cave”, actual resurgence down on right of image. Photo Dig Hastilow.
Description
The small stream which issues from this resurgence cave meanders through scrub to where its narrow channel crosses the path leading to Cueva Del Corazón, and beyond. Once through the smaller opening a large chamber is entered illuminated from a large elongated opening the result of cliff face collapse. This skylight offers resident Owls ease of access. The chamber changes swiftly into a well decorated sinuous twenty metre plus high rift which continues steeply uphill to the large sink entrance. (See cover of report)

Cueva Del Búho Survey.
Cueva Del Corazón
UTM 17P 0743113 x 1003369
Province Panamá
Length 285 metres
Depth 9 metres

Cueva Del Corazón, “Heart Cave”, main streamway. Photo Dig Hastilow.
Description
This is another resurgence cave which once supplied water to nearby farming settlements. The single vadose stream passage may be followed for fifty metres to where a high level solutional passage has developed parallel with the main streamway. Beyond, the passage height gradually reduces to a low wide chamber where a large bat roost is present. To the right a low flooded passage may be followed to where it becomes constricted with small air space. To the left of the chamber the passage continues low to where it becomes choked by fallen blocks, the squeeze was forced by a Bulgarian without success. The broken nature of the surrounding rock hereabouts suggests close proximity to the surface. Small pieces of green glass with blunted edges were found in the streamway indicating the adjacent sinkhole, or entrance use as a refuse dump.
Observation
The floor of the streamway shows several types of rock, (a proper geologist required), among the streamway the rocks are water rolled. On surrounding speleothem ledges are accumulations of similar rocks though more angular in shape, many calcited within the stalagmitic formations. In some roof cavities rocks are suspended within a sand/clay type matrix. It would appear that the cave has passed through at least three phases of evolution.
1). The original formation of the cave.
2). A significant event causing a substantial quantity of debris to be washed into the cave virtually filling the stream passage. A period of time then allowed many stones to be accreted within the growth of speleothems.
3). A further event allowed water to erode the debris fill to create the present passage cross section leaving accreted stones above the extant stream level.

Examples of water rolled stones accreted some two metres above present stream level. Photo Dig Hastilow.

Cueva Del Corazón Survey.
Cueva Piladores
UTM 17P 072054x1003563 (Resurgence) (2017, NAD27/Canal Zone)
Province Panamá
Length 132 metres
Depth 9 metres

Cueva Piladores, “Piledrivers cave”, Roger Day in main Passage. Photo Dig Hastilow.
NB. Though this cave was originally discovered and recorded by James Cobbett, well over a decade ago, neither the survey or description conducted by Keith Christenson, in 2002, have as yet been published, hence its inclusion. Its name was attributed as the locals who kindly guided James to the cave were driving piles.
Location
Its large resurgence entrance is at the end of a deep stream gulley, and quite obscured due to adjacent foliage. Using a GPS, a position within some 200 metres of the resurgence entrance may be attained, but you do need to keep your eyes open, (Appendix 2). Whilst the jungle canopy is quite inhibiting to GPSRs the choice of position format and its own ability to accurately relate has been shown to be uncertain.
Description
From the large resurgence entrance the linear passage reduces in size to an average of some four metres high and three metres wide, this continues until the sink entrance is reached.

Cueva Piladores Survey.
Bat survey of Cueva Pueblo Nuevo
The Bulgarian contingent, including, Michelle Nowak, Nia Toshkova, and Borislav (Bobby) Paunovski conducted a survey of bat species present both in Cueva Pueblo Nuevo and along the adjacent gorge, likely the remains of a significant cave development, in which the cave entrance is located beneath a minor cliff on the eastern side. Several mist nets were set up in the gorge prior to dusk. The data below is taken from their field notes, with minor edits.
On entering the cave, within the first part, we first saw common vampire bats Desmodus rotundus. Throughout the cave there must have been 15+ discrete groups living within hollows in the cave ceiling. These groups seemed in fairly permanent locations because we could see the mounds or dark spots of digested blood below each group but not in other places in the cave. Also observed were many more insectivorous funnel-eared bats Natalus mexicanus roosting individually scattered about in the same passage as the vampires. There were large aggregations of moustached bats Pteronotus--a few P. parnelli and mostly either P. davyi or P. gymnonotus (the big or small naked-backed moustached bats). I also saw a few frugivorous Carollia perspicillata. We went to the end of the cave (the second entrance), then turned around and came back.
Species observed in Pueblo Nuevo cave:
Natalus mexicanus
Desmodus rotundus
Carollia perspicillata
Pteronotus gymnonotus
Pteronotus parnelli
Peropteryx kappleri
Approximate populations are:
Natalus mexicanus - ~200 (too difficult to tell)
Desmodus rotundus - ~200
Carollia perspicillata - ~50
Pteronotus gymnonotus/P. parnelli - ~1000 mixed colony
Peropteryx kappleri - 2
Average temperature/relative air humidity inside the cave: 25.26°C/95.07%
Phase Two. Lago Bayano to Yaviza, Darien; in search of Limestone.
Once the augmented group left Lago Bayano the Anglo-Irish Team returned to Panama City for two days of rest and relaxation thence departing for Yaviza. The information obtained regarding the road, its condition and available overnight accommodation lead to this lesser section of the project being allotted four days. The rumoured severity of the road caused the Team concern as previous experience included a catastrophic suspension failure 2011, broken wheel and abandonment of vehicle on the road to Boca de la Encantada 2009 – repeated in 2017. Every opportunity was pursued to observe exposed geology en-route; made the easier by the previous systematic deforestation within a mile either side of the main road. Into these cleared areas farms and domestic accommodation have become established. The numerous cuttings of hillsides and river crossings provided ample observation of geology, sediments and stratigraphy. The road surface proved far superior to information received. A swift journey to Méteti, allowed the Team to set up at the Hotel Felicidad well before dark. As plenty of daylight remained a trip over the hard top mountain road to Porto Quimba was made to check for presence of limestone; alas none found. On returning to Méteti, looking for cool beer the encounters within the local bars verged on something from the Wild West. The next morning the trip continued reaching Yaviza in little over an hour; the road surface being hardtop for the majority of the journey.

Main Street, Yaviza. Photo Roger Day.
Yaviza is the southern end of the northern half of the Pan-American Highway which terminates some fifty kilometres from the border of Colombia. There is no obvious trail from here to Colombia, the route only having been negotiated once by vehicle. A Landrover took one hundred days requiring the combined support of both Messer’s Landrover and the British Army. A cluster of brightly painted small businesses and houses all appear well looked after. No road bridge crosses the river here where the busy quayside receives crops brought by panga and canoe. Just upstream from the quayside a pedestrian suspension bridge provides access to the southern shore which is limestone. Investigation found it extends from the riverbank into the town; houses directly built upon the exposed bedrock.

Pedestrian footbridge at Yaviza, note limestone forming opposite bank. Photo Roger Day.
Conversations with the friendly Border Guards were informative and helpful, beyond the southern shoreline, maybe a half hours walk, caves do exist. To reach this area requires the conveyance of equipment and supplies made by pack animal. The route to Yaviza, from Panama City, is amply provided with plenty of roadside cantinas supplying good food and drink, though few obvious places to stop overnight; Hotel Felicidad being the most obvious, though the rooms were at best basic, the breakfast however was indeed superb.
Interlude……………
Pozo Azul and Boca de Tulu
As the trip to Yaviza had only taken two days the Team was unprepared and without forthcoming permissions for visiting the Rio Teribe. There were several days before the departure for Aligandi. So the plan to search for the rumoured Pozo Azul, near Penonome was resurrected. This plan also included investigating the rumoured new road bridge spanning the Rio Lura, at Boca de Lura, near its confluence with the Rio Toabre, and to confirm the accompanying comment that it was “now possible to drive to Boca du Tulu”. Where the Rio Tulu joins the Rio Toabre, Boca de Tulu is the village previous reached in 2009 on horseback, having abandoned the two 4 x 4 vehicles, en-route to Boca de la Encantada. Arriving in Penonome well before dark meant the Team seized the opportunity to check the status of the new bridge and actual road conditions to Boca de Tulu.

Rio Lura ford and footbridge. Photo Roger Day.
The Team did find a new bridge however it was purely for pedestrians; the ford remained the only vehicle crossing, just upstream from the confluence of the two rivers. Careful driving got the vehicle across and up the steep slope onto level ground. Some five kilometres on the sun baked ruts became too hard and deep for James’s car to negotiate. Upon returning down the slope to the river a blue haze of smoke erupted from the front of the car as James stopped to let out the passengers, this was the result of a river cobble secure in the compacted track surface punching an elongated hole through the aluminium sump. Fortunately a passing local managed to tow the car through the ford and up the slope to a farm, where it could be recovered by breakdown truck. Whereas in 2009 the vehicles employed were a Toyota Hilux and a Mitsubishi Montero, on this occasion it was only an Acura RDX, crucially lacking a sump guard!

Aluminium sump following impact. Photo Dig Hastilow.
The result of this bad luck was the immediate loss of transport, therefore no trip to investigate Pozo Azul; however the planned return to the limestone area surrounding Cueva Boca de la Encantada now has accurate logistical knowledge. The Team made its way back to Panama City by bus.