Lago Ercina

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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
  New England


 The Battle of
 El Mazuco

Name: Cueva Cobijeru (sea cave; there are two others); also spelled Cobigeru or Cobiheru.

Location: 600m from Buelna.  Easterly road from Buelna passes under railway with narrow bridge.  From the small carpark on the right just after the bridge a path leads (past two caves and over the stream) to the Cobijeru inland beach.  The inland entrance to the cave is immediately to the East of this.

GPS: N43°23'43" W4°36'40"

UTM: 30T 369.63 4806.18

Description: An easy slope leads to a stooping passage to the left (soon out of sight of daylight) which leads into the spacious main cave with daylight and sea visible and audible.  Numerous pools and coloured rocks etc.


2016 – locate entrance and brief trip

2016 – more thorough exploration and photos/video clip

2019 – revisit

2021 – mostly photographic trip

2022 – (March) longer photographic trip; also (20.03) drone flight with sphericals over sea and land

2022 – (June) low-tide trip, also to try NEO3 LED light + drone flight two days earlier

2022 – (October) thorough exploration for bufone connect (not found)



Inside Cobijeru cave

Inside Cobijeru cave

Cobijeru cave – sea breaking (5)

Cliffs over Cobijeru cave

Cliffs over Cobijeru cave

drone still showing entrance locations

drone still showing entrance locations

Expeditions to the Picos de Europa and elsewhere since 1973.
Please e-mail Mike Cowlishaw ( if you have any corrections, suggestions, etc.   See also the SpeleoTrove speleology section ».
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This page was last edited on 2022-11-04 by mfc.