The réseau Félix-Trombe or Coume Ouarnède is an underground karst network formed by a succession of wells and galleries dug into the limestone.
It is a mythical network for speleologists from all over the world. It takes its name from a famous French speleologist: Félix Trombe.
Geography The réseau Félix-Trombe is located on the Arbas massif in the Pyrénées, south of the département in the région Occitanie.
The network The Félix-Trombe network is the longest underground network in France with kilometres of galleries and 61 entrances. With the Henne Morte (), it makes the Réseau Félix Trombe-Henne Morte. It is a complex cavity due to its significant overall difference in altitude () and its numerous entrances.
On 15 and 16 September 2001 in 22 hours, about twenty cavers travelled the entire network from the former highest point (the Gouffre de la Coquille) to the lowest point of the network (the Goueil di Her).Collectif pour la traversée intégrale du réseau Trombe
The main cavities that make up this network are: :
Also included are: :
See also List of caves in France List of caves List of longest caves Speleology
Further reading
Notes and references