- Proceedings of the output on the Causse de Labruguière.
Date: Sunday, February 13 .
Editor of the record: Patrick Cabrol (DREAL)
Participants: Patrick Cabrol (DREAL), Jean-Pierre PLANTY (SCMNE), Marie-Claire AUDOUAR (SCMNE) and Jean-Louis CHAMBRAUDET (SCMNE) .
Duration: 13h to 17h (4:00)
Purpose of release: Inventory and karst cavities.
Work done:
We began our work by the small road leading from the RD 621 to Lacalm.
Duration: 13h to 17h (4:00)
Purpose of release: Inventory and karst cavities.
Work done:
We began our work by the small road leading from the RD 621 to Lacalm.
- Not far from the RD 621, south, we saw many "sinkholes", referenced in the week by Jean-Pierre, the review has been a pretty little stream that loses itself in foot a small hamlet. This is a magnificent loss where 5 to 6 liters seconds disappear instantly, with a small waterfall. The loss seems to penetrate. He will return (if the creek would dry up even better). This is one of the finest examples I know of loss.
- A little farther south, we have nearly a sloping a series of sinkholes, two Pesquiers, etc ..., which give rise to a small creek below. This set is well marked in the landscape, by groups of trees. Everything is properly aligned.
- At the entrance of the village (Lacalm) on the same road, there on the west side of the road, a creek that flows well and seems to emerge from underground (hidden by trees), this place uses pen chickens. We went on the road located 100 meters upstream: No route stream, seeming to indicate that the water emerges from underground, between these two points. We should ask permission to go further.
- Grotte de la Balme: magnificent porch of a resurgence of old, whose size is not aligned with the flow of the river current. Jean-Louis is back in a small hole to the right of the porch, and he joined a small underground stream. At 100 meters upstream, there is a loss that old was pumped (in ruins), and 100 meters downstream, there is a small resurgence, whose waters come in a laundry.
- We went right bank of Thore, and started going by identifying and photographing cavities located on the cliff south of Le Thor, at the sawmill.
- We then found the hermit's cave, along a narrow path climbs steeply to 50 meters east of the two medium voltage electric poles. Exactly at these posts, you can descend directly into the cavity through a rope, because it is completely vertical. It is a natural cavity, which was arranged to receive the pigeons. The interior is very simple, but beautiful.
- We continued up to the magnificent cave Pisselièvre, which is probably an old resurgence. On the surface, we saw a beautiful wooded valley floor, which upstream must be a dry valley (see map and aerial photo).
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