Photographer's Note

May 14, 2006
Vissec 300353 30770
Gard Languedoc-Roussillon
43.900 3.450 500 m

The Vis river resurgence, Vissec.

One of most important springs of France

"La Vis" is a small affluent river of Herault, of 30 km length.
It takes its source on the Saint-Guiral mount in the solid mass of Aigoual. It disappears in the ground at Larcy whereas its flow reaches 50 l/s. Approximately 15 km further, it re-appears in Vissec, at the mill of Lafoux with a flow of 1200 to 2500 l/s. Its affluents are in major part underground. "La Vis" then impressed its course of surface dug in the medium of impressive plates limestones called causses. "La Vis" erodes the basement, provocative constantly underground crumblings able to stop its course for hours, even days, as in 1779, 1890, 1927 and 1961.
Its exploration, appears difficult and dangerous in a water with 11 and a very strong current.
1952: First visit under the water, carried out in apnea.
1967: Two plungers explore 35m cavities until - 20 m.
1976: Lopez and Vernet manage to increase by 45 m.
1980: Claude Touloumidjian makes divings up to -75 m out of 360 m.
2000: Patrick Bolagno passes the 1610 m after a siphon to - 80 m.
2002: Patrick Bolagno remains 9h45 under water for 1h30 of progression.

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Additional Photos by joel berthonneau (jlbrthnn) Gold Star Critiquer/Gold Note Writer [C: 7168 W: 0 N: 22964] (76043)
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