Traversing the Chamonix Aiguilles is a very big and committing route, to go as far as the Aiguille du Plan however is a classic and relatively easy half day climb. The Midi-Plan traverse is a classic AD route that requires a good head for exposure and some rock skills. You spend the day along a knife edge ridge with a 1500m north face drop on one side and the Vallee Blanche the other. Traversing some delicate slopes with little or no protection, a couple of abseils and some grade IV rock moves in crampons thrown in for good measure. Annie joined me for this perfect day up high. The weekend before saw bad weather hitting Chamonix and there was a lot of new snow up high. With good weather on the tuesday I knew there would be a track in and with cold overnight temps this would re-freeze and make our day more enjoyable. Leaving the ice tunnel about 7:40am we were making quick progress along the ridge, over taking a few guided groups. Meeting one team at the two abseils we soon passed these on our push to the summit of the Plan where we arrived just two hours after setting off. The Aiguille du Plan is a proper summit. Standing on a block the size of a dinner table overlooking Chamonix you get a true sense of exposure and a great 360 degree view of the Mont Blanc Massif.
On the return journey to the Midi you have to re-climb what was abseiled on the approach. Some awkward grade IV rock with a small section of snow inbetween. It was really good fun and easy to protect. Downclimbing the exposed snow slopes was a little tricky even with firm snow, maybe its easy for others. I hate downclimbing! After this you are back on the ridge by Col du Plan and have a couple of hours slog back to the Midi. I was suffering from a twisted ankle from the weekends football and Annie had only been back in Cham for a few days and had not been up high. We were slow! Taking just under 4 hours from the Plan back to the Midi, twice as long as the first half. The snow stayed firm in the roaring midday sun even though the temps must have been in the teens up high. This route definitely lives up to its reputaton as a must do climb and I can highly recommend it.
Joel Evans 
Fantastic photos. Hill-walking in Cham is right up there and this post shows it!