sump 3b

125

60

p.4000m

p.3750m

24

57

50

sump 3

17

5

12

p.3113m

1.5

-2

-2

B-4

-6

+2+3

+7

D

+7

-5m

+7

s ou

t hp

as s a

ge

C

+10+7

+8

-2

A

+8

p.2806m

12

+2

13

p.2721m

6

8

p.3360m

6

8

9

sump 2

p.2397m

p.2500m

p.2070m

104

14

1514

20

14

p.1500m

5

19

12

13

11

24

p.1000m 4

16

Gouffre dePou Meyssen

p.782m

10

8

13

18

4

315

p.500m

1215

4

6

15

Gouffre deCabouy

31

Secchi station

p.100m

Reseau de l’Ouysse, Gramat, France- Gouffre de Cabouy / Gouffre de Pou Meyssen -GPS location: N 44.7902 E 1.5844 (Gouffre de Cabouy)

N 44.7907 E 1.5931 (Gouffre de Pou Meyssen)

N 44.7877 E 1.6122 (Radio location)

Length: 6238 m Water depth: 125 m

p.xxx indicates penetration distance from the surface at the ’Cabouy’ cavepool in meters

Surveyed by: Holger Amecke, Jutta Arens, Danny Beiert, David Berguin, Gloria Dossi, Vin-cent Ferrand, Sandra Fiehe, Mathew Gentile, Niko Gerdau, Osama Gobara, IreneHomberger, Maren Isigkeit, Chris Le Maillot, Andrea Marassich, Jan Meden-waldt, Sergio Murgia, Jan Reimann, Danny Riordan, Christian Sandrini, StephanSchlumbohm, Torsten Schnitter, Jörg Schwerdtfeger, Josef Spanyol, Zsolt Szi-lagyi, Lodovico Venturoli, Andrew Woodside 2009 – 2020

Drawn by: Torsten Schnitter (c) 2014 – 2020

With thanks to: Matthias Appel, Sven Bertelmann, Olivier Bertieaux, Michel Besson, DamarisBrunke, Mia Buchs, Christoph Bühler, Daniel Chailloux, Petra Clerx, PatriceDussart, Manuel Eickhoff, Franck Gentili, Alain Hout, Christian Howe, UliKunz, Stephan Matthies, Mike Miethke, Wilhelm Mönnikes, Birgit Nischler,Norbert Nischler, Kasia Puchalska, Ute Roschanski, Roman Rosenberger,Stefan Schandelle, Mike Schernbeck, Georg Schmidt, Colin Schüle, HervéVilatte, Chris Werner

Legendentrance floor step waterwall overhang sumpunsurveyed wall pit sanddebris ceiling step claycross-section chimney debris

5 passage height +15 chimney height blocks, breakdown2 waterdepth -30 pit depth water flow

possible continuation contour radio locationpassage end, narrow slope scallopbreakdown choke boulder pebbles

N

0 40 80 120 160 200 m

1 : 2000

B.C.R.A. Grade 3B

Exploration history1971: Dive to 200m from Cabouy (Divers of Angouleme)

Dive to 130m downstream from Pou Meyssen (Divers of Brive)Dive to 275m downstream from Pou Meyssen (G. Franzciakis, C. Touloumdjian)

1974: Dive to 300m downstream and 275m upstream from Pou Meyssen (G. Franzciakis, C. Touloumdjian)1975: Dive to 510m downstream from Pou Meyssen (G. Franzciakis, C. Touloumdjian)

Connection Cabouy - Pou Meyssen (C. Touloumdjian)Dive to 630m upstream from Pou Meyssen (C. Touloumdjian)

1976: Dive to 850m upstream from Pou Meyssen (C. Touloumdjian)1978: Dive to 1200m upstream from Pou Meyssen - end of sump1 (C. Touloumdjian)

Dive to 2400m from Cabouy - start of sump 2 with 400m of dry passage after sump 1 (O. Isler, C. Magnin)Discover of ”Big Shunt” at 500m downstream from Pou Meyssen (C. Touloumdjian)

1979: Dive to end of sump 2 with 40m of diving passage in sump 2 (O. Isler, C. Magnin)Traverse Cabouy - Pou Meyssen (P. Penez, C. Touloumdjian)

1988: Principal survey second drypart to 2800m from Cabouy (Group ”Pou Meyssens 88”)1989: Principal survey second drypart to sump 3 and sump 3b at 3000m from Cabouy (Group ”Pou Meyssens 89”)

Connection sump 3 and sump 3b (M. Douchet, F. Poggia)1991: Dive to 160m and -35m into sump 3 (M. Douchet, F. Bernard)2000: Dive to 190m and -43m into sump 3 (R. Stanton, J. Mallinson)2003: Dive to 240m and -55m into sump 3 (J. Mallinson)

Dive to 360m and -40m into sump 3 (R. Stanton)2005: Dive to 410m and -60m into sump 3 (J. Mallinson)

Dive to 520m and -120m into sump 3 (R. Stanton)2019: Dive to 600m and -125m into sump 3 (the hidden river project)