As far as I can remember, the only "sketchy" bit was the ladders if you are going clockwise. Oh, and perhaps the Fenetre d'Arpette.
Enjoy, it was one of the highlights of my life so far.
I went the Alp Bovine route, so didn't pass the Fenetre d'Arpette. That is a lovely valley though and pretty cool to see the Glacier du Trient, I've only been up there in winter.
@chiroshi started
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As far as I can remember, the only "sketchy" bit was the ladders if you are going clockwise.
Oh, and perhaps the Fenetre d'Arpette.
Enjoy, it was one of the highlights of my life so far.