Saturday, 23 August 2008 - Saturday, 13 September 2008
Recently I was very lucky to join a YSS expedition to the Sima de las Puertas de Illamina (BU56), which at a depth of just over 1,400m is one of the deepest caves in the world. The cave is located in the Spanish Pyrenees only a few miles from the deep and popular Reseau de la Pierre Saint Martin.
The entrance was discovered by Jean-François Pernette and I. Ortilles in 1979. That day Pernette reached a depth of -92m after passing the extremely narrow meander N. In the following two years, expeditions followed in which many famous French cavers participated; such as J-F Pernette, Richard Maire, Serge Fulcrand, Gerard Bouteiller and Georges Marbach. They pushed the cave to a depth of -1338m; making it the deepest in the world. Fred Vergier dived the terminal sump of the cave and two following sumps. In 1986 and 1987 a Bulgarian expedition dived three more sumps, stopping before sump 7. This fantastic achievement brought the depth of the cave to -1408m.





