Home De Avalon Pagina's Grotten in Belgie The Avalon Pages Caving in Belgium

Custom Search
 


Ecological Chemistry:


Caving & Climbing gear:

Outdoor and Innovation

Gemeente Edegem:

 
SDWorx:


Omhoog/Up

Access News General info Detailed Info Longest & Deepest FAQ The Cave Guide

CAVING IN BELGIUM
The longest and deepest caves


The longest caves in Belgium: longer than 500 m.

Please follow this link to see the table... (this way I don't have to maintain two web pages with identical tables)

Recent important changes that were made to this table:

* July '97 - Système Weron-Dellieux: development has reached 3600 m after the discovery of the "Réseau de la Topo Foutue" by SC Avalon..
* July '97 - Abime de Comblain-au-Pont: development now 807 m (= growth of 123m) after discoveries by GRSC
* March '98 - Trou Ozer now features in this list (length 500m), after discoveries bij CASA, Aywaille.
* Sept '98 - Réseau de Waerimont enters the Top 10 with a total length of over 2400 m!
* Dec '98: Système Weron-Dellieux now officially reaches 3610 m.
* jan 1999: Trou du Moulin (Marenne): discovery by SC de Belgique. Length testimates at >600m, depth -39m. See Regards 1997.
* July 1999: Réseau de Waerimont is already longer than 3600m and it isn't finished yet!
* Aug 1999: Réseau de Waerimont, 4 km long,  jumps to 5th place in the list and is still going!
* Jan 2001: Complete review of this table!
 I have added a column with the "source" and some details about the figures.  Lots of changes, due to new informations given to me by several people. Chawresse-Veronika cave System enter topo 5: still an estimation, but 3/4 is now based on accurate surveys.
new survey  830m.  Grottes de Floreffe: new survey 688m. Chantoir des Fagnoules: 800m (new discovery by Avalon)
*Nov 2003: Chawresse-Veronika: after new discoveries (Avalon) the cave system reaches 5 km!
* Dec 2003:  Chantoir des Fagnoules approaches 1000m after recent discoveries behind the terminal sump.
* Jan 2004: New discovery near Yvoir: Trou de la Chaise, underground river for an estimated length of 1000 m.
* Jan 2004: Abime de Lesves, after the discovery of a new part (Réseau des Sangsues) by GRPS and after the junction with Trou des Hyacintes, reaches 751m in length for a depth of -68m.  
* June 2005: Chantoir des Fagnoules
enters the top-20, the recent explorations behind the sump have ported the total length to +/-1500m.
* Sept 2004: Grotte Bebronne has been connected with Chantoir de Clisore in June 2004, after digging works by P. Dumoulin, JP Roosens, J. London and F. Polrot.  The cave now measures 1262m.
* June 2005: Chantoir des Fagnoules enters the top-50, the recent explorations in the part behind the sump have ported the length to  +/- 1500m and the depth to -57m.
* May 2005: Grande Faille du Fonds des Cris (Chaudfontaine):  this beautiful discovery (2001-2002) by the clubs GRSC and Abyss, has a respectable length of 1040m and a depth of -55m.   
* Jan 2006: A new survey by J. Hosselet brings the total length of the tourist cave Grottes de Pont d'Arcoles at 858 m.
* Jan 2006: And the same author mentions a length of 1500 m for a new discovery in the Province of Namur, Abri du Risous
* Jan 2006: 2250 m and -90m of depth for what is becoming one of the biggest discoveries of the past 5 years: the Souffleur de Beauregard, an underground river discovered by one of the most active teams around: the GRSC.
* Jan 2006: Grotte du Chalet, 539m, na diverse duikexploraties van J. Petit (Casa) en M. Pauwels (ESCM)

Remark: for the first time in history, the cumulated length of all Belgian caves longer than 500m has passed the magical 100 km mark... we are now at 102 km!

* Jan 2006: Grottes de Goyet: discoveries made by an individual caver "Bibiche" (1997 till now) have ported the length of the tourist cave to 1500 m; he also explored a new lateral cave system which is +/- 200 m in length!
* June 2006
: The Souffleur de Beauregard continues to climb in the Top 50; the cave is now already 3389m lang.
* Dec 2006: The Souffleur de Beauregard has passed 3500 m!
* Aug 2007
: New cave, explo GRPS: Chantoir de Rostène with a length of 700 m and depth of -81m.
* Oct 2007: A new survey of Trou Qui Fume (Furfooz) by Interclub Hades, gives a total length of 923 m en a depth of 99,6 m (of which 31 m diving).
* Oct 2007: Chantoire de Rostène passes the 1000 m mark.
* Oct 2007: Chantoir des Fagnoules makes a big leap forward, after the discovery of at least 500 m of new galleries post S6.
* Dec 2008: New discovery by SC de Belgique: Grotte de L'isbelle (+/- 850 m)
* Jan 2009: Chantoir des Fagnoules jumps to the 11th place with 2283 m
* Jan 2009: Souffleur de Beauregard passes the 4 km mark!
* April 2009: The junction between Chantoir de Buc and Chantoir des Fagnoules (SC Avalon) results in the "Système Fagnoules-Buc" with a length of 2600 m.
* Jan 2010
: Grotte du Chalet (Aywaille): 969 m after surveying the entire cave, including the part behind the S5
* Jan 2010: Trou des Côtes: New discovery by SC Avalon. Length 650 m.
* Aug 2010: Grotte de la Fosse aux Ours (Rochefort): beautiful discovery by SC Cascade, already more than 1 km long.
* Aug 2010: Grotte de la Fosse aux Ours (Rochefort): the connection (diving!) with Trou du Muret takes the length to appr.  +/- 1500 m.
*Oktober 2012: Grotte-Mine & Grotte de l'Etang de la Villa des Hirondelles: an exploration that goes back to 2006-2007 but the total length was not communicated earlier. Collaboration between Flemish cavers of Technico/Kempen and the Walloon club GRSC.
*December 2012: Grotte Sainte-Anne
(Tilff): a new survey by SC Avalon indicates that the cave is at least 1751 m long. And Trou des Manants entered the table with a length of 1500 m. In the past this cave was estimated to be less than 500 m!
* August 2013: New in this table: Trou du Parrain in Rochefort, 587 m long.
* Januari 2014
: the long awaited survey of Nou Maulin, by Speleo Nederland, gives a new length of 2275 m.
* February 2014: a new cave, discovered by SC Avalon: Trou du Bonheur in Eprave.
*January 2015: Chantoir de Morville (L=950 m) added
* December 2015: new cave, the magnificent Nou Bleu in Sprimont
* Dec 2016: Trou d'Haquin, one of the most underestimated caves, makes a big jump. The new survey by GRPS indicates that the cave is at least 3000 m long.
* Dec 2016: and also Grotte Sainte-Anne makes a big leap, the new survey by Speleo NL nearly arrives at 3000 m. 

Comments:

Statistically:
Belgium has now 39 caves that are longer than 1 kilometre and 20 that are longer than 2 kilometres! The past years (as from 1990) this table has undergone dramatic changes. Some big discoveries were: Chantoir Dellieux and the junction with Trou Weron, Chantoir de Beron-Ry, Grotte des Emotions, Système de Bretaye, Réseau de Waerimont, Grand Faille du Fonds des Cris, Trou de la Chaise and recently the Souffleur de Beauregard, Grottes de Goyet, Chantoir des Fagnoules.... 

Access:
- only 12 of the 70 biggest Belgian caves are still freely accessible!
- 9 caves are gated and locked with an UBS-gate. The key is in possession of all serious clubs and can be borrowed from the Federations (VVS and UBS).
- Most caves can be visited after having obtained a permission. In general they are gated as well. You can find access conditions in our Homepage. Don't forget that in some cases the regulations are very strict and that access permissions could be difficult to get without a valid motivation.
- In some cases, access conditions are not known by us.
 

 


The deepest caves in Belgium: deeper than 50 m.

Source: K.I.W.I. (Karst Inventorié en Wallonie et Informatisé) en J.L-De Bock.  Additions by Paul De Bie. This table may not be published without mentioning this source!

Legend:
Column 1 = total denivelation (in m)
Column 2 = highest point above entrance (in m)
Column 3 = deepest point under entrance without diving (in m)
Column 4 = deepest point, under entrance,  diving (in m)

 Please follow this link to see the table...
 

Recent changes made in this table:

* July '97 - Abime de Comblain-au-Pont: depth is now -82 m (is 30 m deeper than before), of which -10 diving . Discovery by GRSC.
* March '98 - Trou OZER moved one place upwards, after discoveries by CASA Aywaille that made the cave 5 metres deeper.
* June 1999 - Réseau de Fresnes (Lustin): a new entrance (Trou de la Belle Casquette) has changed the depth a little bit: it is now 81 m (+15/-56m)
* Jan 2000 - Chantoir Valentin (Morville): a new discovery, made by our Dutch neighbours, that reaches the depth of -76 m.
* Nov 2002 - Réseau de Waerimont:
has been added (depth 58m)
* Jan 2004: Abime de Lesves, after the discovery of a new part (Réseau des Sangsues) by GRPS and after the junction with Trou des Hyacintes, reaches 751m in length for a depth of -68m.  
* June 2005: Chantoir des Fagnoules
enters the top-50, the recent explorations in the part behind the sump have ported the length to  +/- 1500m and the depth to -57m.
* May 2005: Grande Faille du Fonds des Cris (Chaudfontaine):  this beautiful discovery (2001-2002) by the clubs GRSC and Abyss, has a respectable length of 1040m and a depth of -55m.
* Jan 2006: 63 m of depth for a new discovery in the Province of Namur, Abri du Risous
* Jan 2006: 65m of depth for a new discovery by SC Avalon, Chantoir de B. (Province of Namur)
* Jan 2006: 2250 m and -90m of depth for what is becoming one of the biggest discoveries of the past 5 years: the Souffleur de Beauregard, an underground river discovered by one of the most active teams around: the GRSC.
* July 2007: Chantoire du Fond de Rostène, new discovery (J. Simus), L= 300m, D=-60m
* Aug 2007: New cave, explo GRPS: Chantoir de Rostène with a length of 700 m and depth of -81m.
* Jan 2009: New cave explored by GRSC: Douve aux Salamandres, 83 m deep.
* Feb 2013: Grotte La Merveilleuse (Dinant) makes a big leap to the 13th place, after an artificial climb of 34 m, performed by the GSCD. 
* Dec 2016: Trou d'Haquin makes some progress now that the new survey by GRPS, indicates a depth of  -70 m.

Comments:

Statistically:
7 caves already are now over 100 m deep. This is due to the performances of our cave-divers. Looking at column 3 shows that in only 2 of these 7 caves, non-divers can reach a depth of >100 m: Trou Bernard and Système Weron-Dellieux.

Access:
Here also we see clearly that, without knowing the right people or without having the famous "UBS-key" you won't go very deep into our Belgian caves anymore. In some of the listed caves, exploration is only possible when you are a cave diver.

 
Contacteer/contact us:  SC Avalon vzw
Privacy beleid: Wij maken gebruik van externe advertentiebedrijven om advertenties weer te geven wanneer u onze website bezoekt. Deze bedrijven gebruiken mogelijk informatie (niet uw naam, adres, e-mailadres of telefoonnummer) over uw bezoek aan deze of aan andere websites om advertenties weer te geven over goederen en services waarin u wellicht geïnteresseerd bent. Als u hierover meer informatie wenst of als u wilt voorkomen dat deze bedrijven deze informatie gebruiken, klikt u op deze link: http://www.google.nl/privacy_ads.html