That brings back some good memories! Nice photos and good report.

I've been up there a couple times, such a great place. The hike up the saddle to Hagen isn't too bad if you follow the trail, which is hard to see in the snow... If you want to get to Hagen another way you can access it above Upper Lena Lake if I recall, pretty steep climb but there is a good trail.

Did you use the Putvin trail to get up to the lake? If so, can you drive up to the trailhead now? There was a washout on the forest road, I don't know, 15 years ago which added 3-4 miles of road hiking and a steep drop into the washout in order to access the Putvin trailhead.

Good stuff.