Printed from: http://braemoor.co.uk/crolles/vouay.shtml on 23 Aug 2017
Copyright: © 2017 - 2017 John Gardner

Réseau de la Dent de Crolles

Gouffre Bob Vouay

Northing: 45.30960° Easting: 5.85445° Altitude: 2,026 m

How to find it

The easiest way to find Gouffre Bob Vouay is to follow the GR9 from the Col du Coq up to the junction where the path to Trou du Glaz takes off to the left to traverse above slopes. Keep right, and follow the path up towards the Pas de l'Œille and the summit. At the top, rather than overcoming the last few metres of height by traversing to the right, keep going up the line of the fault onto the plateau into a small fault valley. The entrance to Gouffre Bob Vouay is associated with the small shaft with an arched entrance 40 m on the left. Clamber up to the arch, and free-climb into a large pit. The entrance is tagged with a label.

Map of Dent de Crolles showing position of Gouffre Bob Vouay

Showing location of Gouffre Bob Vouay on the IGN 1:25000 map 3334OT
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Location of Gouffre Bob Vouay on Google Earth

Showing location of Gouffre Bob Vouay on Google Earth - north is to the right
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Gouffre Bob Vouay from the top of the Pas de l'Œille

Showing view of Gouffre Bob Vouay from the top of the Pas de l'Œille
The rock arch is in the centre of the photograph
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The arch from the entrance of Gouffre Bob Vouay

Showing the arch from the entrance of Gouffre Bob Vouay
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The identifying laberl at the entrance of Gouffre Bob Vouay

The identifying label at the entrance of Gouffre Bob Vouay
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Further information

Gouffre Bob Vouay is the highest entrance into the Réseau de la Dent de Crolles, giving a through trip to the Guiers Mort of 694 m (first achieved in January 2017). It was largely explored from below from the aven above P36 in Trou du Glaz from 1983, and the entrance was opened up in 2009. It's a complex area, with many shafts and meanders. In addition to the connection with the Trou du Glaz, there is also at least one route that descends into the Grotte Chevalier. Information is sparse on the web, although this cross section drawn by Gilbert Bohec helps to clarify where it fits into the system.

Cross-section of the passages below Gouffre Bob Vouay
Red passages indicate the Vouay - Chevalier route; blue passages the Vouay - Glaz route
Drawn by Gilbert Bohec

A cross-section of the passages below Gouffre Bob Vouay - Drawn by Gilbert Bohec
Red passages indicate the Vouay - Chevalier route; blue passages the Vouay - Trou du Glaz route
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