Introduction
Site list (GPS fixes)
Walks (GPS tracks)
Video clips
Panoramas
Coordinates used
Electronic projects:
Bat detector
Lamp tests
µ-controlled lamp
SEPIC-based lamp
ISP isolators
Making SMT boards
Expedition logs:
Spain 1973, 1974,
1975, 1976, 1977,
1979, 1982, 1983,
1985, 1986, 1987,
1988, 1989, 2000,
2001, 2002, 2003,
2004, 2005, 2006,
2007, 2008, 2009,
2010, 2011, 2012,
2013, 2014, 2015,
2016, 2017, 2018,
2019, 2020, 2021,
2022, 2023
Mexico
New England
Translation:
The Battle of El Mazuco
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Speleogroup is a caving club, formed in 1969. On this site are details
of some of our projects, summaries or transcriptions of our caving
expedition logs, and a translation of El Mazuco (La defensa imposible).
Click here for the latest (2023) expedition log.
Sadly, this was Bill Collis’ last trip to Spain.
Electronic projects
Project
| Description
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Lamp tests
| Live (in-cave) lamp tests of Luxeon Star LED lamps
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ATtiny-A
| Luxeon Star LED caving lamp based on the Atmel ATtiny15L AVR
microcontroller
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LT1512-A
| Luxeon Star LED caving lamp based on the LT1512 SEPIC (buck/boost)
battery charger IC
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ISPisolaters
| ISP Isolators for Atmel AVR microcontrollers
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SMT boards
| How to make SMT boards at home (pictorial)
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Bat detector
| Building a frequency/amplitude-recovering bat detector
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Expeditions
Members of Speleogroup have participated in the following expeditions
to Northern Spain. See also our list of speleological sites, a selection of our walk tracks, panoramas,
and video clips, and our notes on the mapping
coordinate systems used.
Year
| Primary destination(s)
| Notes/with
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1973, August & September
| La Hermida Gorge ✗
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BUSS & OUCC »
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1974–1975, New Year
| Rales and Llanes
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1975, July & August
| Rales system, Pozo del Infierno, Los Lagos, Forcau, La
Hermida
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SCAL, Montpellier
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1976, July
| Vega El Forcau
(Forcau ’76)
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OUCC (Proceedings 8 »,
or text version »)
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1977, April
| Reconnaissance, Garma Ciega and Ribadesella
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Quad-C, CCCC
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1977, July
| Garma Ciega
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OUCC, MUSS, PCG
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1979, July
| Los Lagos, Toyu, Ramales
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OUCC
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1982, July
| La Franca, Suarías, Latarma & Toyu survey
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IBMCC
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1983, July & August
| La Franca & Llanes », El Cuevón de Pruneda (Purón)
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1985, August
| La Franca, Pruneda, Los Lagos, Fuentica, La
Hermida & Bejes
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OUCC, Rales cavers
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1986, August
| Pruneda, Pozo del Infierno, Cueva Negra, Rafa’s group,
Toyu
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Rafa & ‘The Wild 13’
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1987, July
| Rales, El Mazuco, Tinganón
| Rafa & Spanish group
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1988, August
| via France; Cabañuca, La Boriza, Rioja
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1989, July
| Llanes area, Mestas, Socueva, La Borbolla
| Angel; Speleogroup’s 20th Anniversary
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2000, July
| Fuente Dé, Tinganón, Fuentica
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2001, July
| Cubilla, El Mazuco, Orandi, Viango, Pozo del Infierno
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2002, June
| El Mazuco, Pruneda, hikes, General Strike, Cabañuca
|
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2003, July
| Andinas, Bulnes, Trumbio, Viango, Cueva Negra, high
Picos
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2004, June
| Bulnes, Cueva Bolado, Green Sink
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2005, July & August
| Rales, Peña Blanca, Espinosa, Ramales, Durango
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Rales cavers
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2006, June & July
| Gesaltza, Viango, Forcau, Devoyu, Ramales, Balzola
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2007, June
| High Picos, Devoyu, Caín, Rales, Sotres
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2008, June & July
| Tinganón, Bulnes, Suarías, high Sierra towards Turbina
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2009, June & July
| Tayada, Peruyal, Cofría, Valmayor, Negra
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Speleogroup’s 40th Anniversary
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2010, July
| Cudillero, Bufones×2, Tresviso, Río Purón,
Cofría, Cueva del Arco
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2011, May
| Áliva, Cofría, Avín, Tenis, Dobros, Forcau, Llonín, Caín
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2012, June
| Potes, Nansa & Saja valleys, Gulpiyuri, Andara mines.
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2013, July
| Potes, Cangas, Pruneda, etc.
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40th anniversary of first caving in Spain
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2014, June & July
| Llanes, Orandi, Pruneda, Potes, Urdón canal, San Vicente, Cobijón
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2015, August
| San Vicente, Potes, Llanes, Cabañuca, Fuentica
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2016, June
| Cicera, Trumbio, Cobijeru, Vega de Hibeo, Toyu
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2017, June
| Cueva del Toyu, first drone explorations, Cobijón, Cheese
Crawl (a cheese a day)
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2018, May
| Los Tocinos, Cubilla, La Borbolla, Cueva del Toyu,
Tinganón
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2019, March
| Villa, Tebrandi, Boriza & Pozo de Fresno, Potes, Tresviso, Bolado
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Speleogroup’s 50th Anniversary
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2019, June
| Mazacuíos, Bufones de Santiuste, Boriza, Cobijeru,
Rejo/Cofría, Tayada, Tenis
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2020, March
| Ribera del Duero, Oviedo, Llanes, Pierre Saint Martin
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Coronavirus stopped play.
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2021, September
| Bolado, Cobijeru, arches, drone + 360°, Matienzo
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Masks!
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2022, March
| Bufones, Llamigo, Pruneda resurgence, Cobijeru×2
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Fewer masks, etc.
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2022, June
| Cobijeru×3, Bolado, Los Tojos, tamarisks, bufones, Caldueñin
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No masks, except on aeroplanes. Hot!
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2022, October
| Cuevas del Mar, Tresviso, Trumbio walk, Cobijeru, El Arco drone
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Pleasant weather.
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2023, March & April
| Cueva del Cuélebre, Los Lagos, Cueva Bolado
UV-C, Tito Bustillo, Museo de la Emigración
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No masks! 50th anniversary of first caving in Spain.
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| Illustrated page; all photographs are
contemporary with the log in which they appear.
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✗
| Log is a summary; transcription
not yet available. All other logs are complete transcriptions of
original handwritten (or typewritten) logs. All original text was
written in the field by Bill Collis and/or Mike Cowlishaw, except
where noted.
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Speleogroup members have also participated in the following explorations:
Year
| Primary destination
| with
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1969–
| UK
| BEC », BUSS, IBMCC,
MCS »,
OUCC », SWCC »
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1974, summer
| Co. Fermanagh
| BUSS
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1978/9, winter
| Mexico – City, Cuetzalan, Chiapas, Palenque, Popocatépetl, etc.
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IBMCC & North-American cavers
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1980/1
| USA, New England
| Yorktown High »
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1982, April
| Co. Clare
| IBMCC
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1983, April
| Co. Clare
| IBMCC, KCC
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1986–
| Italy
|
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2003, October
| Hawai’i Big Island » Lava tube caves
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Other projects
Project
| Description
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The Battle of El Mazuco
| A translation of El Mazuco (La defensa imposible) by
Juan Antonio de Blas, in La guerra civil en Asturias, Tomo 2,
1986.
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MapGazer »
| MapGazer is a new application for viewing
offline maps (maps stored on disk) on a Windows personal computer
(PC, laptop, or tablet, running Windows 7 or later). It is especially
useful when the device in use has an unreliable (or no) internet
connection (as is often the case ‘in the field’).
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PanGazer »
| PanGazer is a new application
for viewing images and panoramas, including 360° spherical and hemispherical
panoramas as captured by drones, on a Windows personal computer (PC,
laptop, or tablet, running Windows 7 or later). It is especially
useful for setting and using geographical information (e.g., bearing
of images) and extracting ‘stills’ from spherical panoramas.
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