Second time lucky and what a fantastic destination this is! Amazing 360-degree views from the summit (which needs a new notebook in its register) with the Joffre group being most prominent. Marriott and Cayoosh look daunting and spectacular. We could identify Gott & Gotcha Peaks at Blowdown Pass, and could see far to the south into the Stein (where we'd just spent a few days).
The trail up to Rohr Lake is in good shape - a few trees to get over but they pose no problems even with an overnight pack. The remaining trees have been cleared - thank you :-) The boggy boulder field is not as bad as it was when I was last here, but still pretty muddy. However, we found that it was possible to pick our way through keeping our feet in rocks or bits of wood. In only a few cases did we have to resort to stepping into the mud, and even then it wasn't deep. Bugs were annoying here too.
Beyond the lake, the trail is straightforward to follow, eventually running out among the boulders. However, there are plenty of cairns to keep you on the right track, and they will lead you all the way to the summit. Take care coming back down as it's easy to take a different route. Time from the lake was about 3 hours up, and 2 down.
The access road seems a little bushier and rougher than when we were here back in June. It's still OK for even low clearance vehicles for the first km or so. Be aware that there may be some work going on at the Wendy Thompson hut - a handful of large pickups filled the parking spots nearest the trailhead and a helicopter was ferrying supplies for much of the day (Friday). We encountered a couple of hikers who said the road had been closed off while that was going on.
We made this a leisurely trip, camping at Rohr Lake for 2 very peaceful nights. It took us about 2.5 h to get up to the lake and less than 2 down. The camping isn't the greatest but there are a few flat spots. Of course there are *no* facilities so please practice leave no trace camping. Please. There's enough TP scattered around as it is. The outlet creek from the lake is dry.
Bugs were pretty bad near the lake, but not a problem as we left it behind (just a handful of horse flies). Surprisingly they were much worse near our tent (which was only about 10 m from the lake) than at the water's edge.
Wildlife: ptarmigan + brood x2, grouse x2 (even heard them calling), several small birds in the alpine (to be identified), Clark's nutcrackers, nuthatches, heard many pikas and marmots, fish in the lake, a frog that scared the living daylights out of me when it hopped into the lake by my feet, and a mountain goat high on the cliffs above the lake.
Flowers: most are past it and we're now into the late-season blooms. Fringed grass-of-Parnassus is peaking, as is pink and yellow monkeyflower. Alpine willowherb was spectacular, carpeting great swathes of the ground in pink. Very cheerful.