6a, A1+. See Vallot guide for a reasonably detailed description. Some tips for the S to N traverse: (1) The route up the Crocodile is not well described. Go a little up the icy chimney until possible to move leftwards along a line of weakness. This leads to a niche, from where a short, awkward chimney is followed to the arete. Easy ground from there to the summit. (2) All ab points had in situ pegs and tat of at least ok quality in July 2010. (4) Penultimate ab off the Caiman (to get down to the snowy ledge on the Chamonix side) is over 30m. Might just get to an intermediary ab point on a 70m rope with rope stretch. It's a blank wall, so downclimbing is not an option. Therefore one 60m rope won't be sufficient!(3) Final ab to the Col du Caiman just about doable on 60m ropes with rope stretch but beware jamming the ropes in the crack running down the ab line. To help avoid jamming, consider doing two abs using an intermediary ab point - however the second ab will then be in excess of 30m even with rope stretch, leaving a tricky down climb (possible to set up a second ab point - this is not in situ). A 70m rope would be helpful. (4) One 60m rope sufficient for all other abs and also for all pitches (can double up the rope if need be - the harder pitches don't exceed 20m). Consider taking one 60m rope and pull cord for a retrievable abseil to deal with the couple of long abs. (5) A1 slab on the Fou has three in situ pegs (July 2010), which can be supplemented with some micro wires but not essential. (6) Vallot refers to a down climb onto a rounded arete to get off the Fou. Not clear what this refers to. Instead, scramble down the path of least resistance on the Envers side to reach an ab point (hidden away on the left looking out, possible ab from a little higher up to get to it) and do two abs to get to the system of rising ledges and weaknesses that leads round the Ciseaux. (7) There are several ab stations on the Bregeault Ridge (the main ridge under the N Summit of the Blaitiere - to get there, cross a narrow subsidiary snow couloir to the left (looking out) of the Spencer couloir). (8) Recommend full set of nuts and cams (BD 0.3 to 2, 3 not essential).

Ticklists: Rebuffat's 100 Finest Routes in the Mont Blanc Massif, Batoux's 100 finest routes in the Mont Blanc massif.

Hidden ??/2013 -
jcw ??/2013 -
hamish2016 08/Sep/12 AltLd O/S
with Gregoire Laverty et Julien Sagues
James W 08/Aug/12 2nd

Good conditions, 16 hrs to breche de blaitiere, another 17 after bivy to fo grepon and grand chamoz and get down to chamonix in dark. Amazing, lots of interesting moves, very exciting

with Mark Thomas
Hidden ?/Jul/11 Lead
Hidden 25/Aug/10 Solo
Misha 18/Jul/10 AltLd O/S

Took three days, 18 to 20 July. First bivvy at Breche du Caiman, second bivvy on the first large ledge on the Fou.

with Dave Commins
BorisVBlade 09/Jul/10 AltLd dnf

Started on the 9th July, first bivy at Breche du Caiman. Ropes got stuck on the last ab off the Caiman and took 2 hours to retreive. On 10th July got to the big ledge on the Fou, two pitches below the summit at about 2pm. Light rain started, so decided to sit it out and if need be bivy again. At 4pm got hit by heavy rockfall and were forced to call for rescue due to injuries - both survived. Beware of this ledge!

Hidden ?/Jul/10 AltLd
Natalie feather ??/2008 AltLd
Hidden ?/Aug/95 AltLd
Hidden 01/Aug/86 AltLd dnf
17 users have this on their wishlist
High TD+
Mid TD+
Low TD+
High TD
Mid TD
Low TD
High TD-
Mid TD-
Low TD-
Votes cast 2
Style of ascent
Alt Leads
Not Set
Not Set