David, the last time that I was directly in the Cathedral Range was last year about this time. But, that was a wet year. Mathes Crest was a great scene in early morning.
If you do get in there, another lake to check on is Reymann Lake. Yes, I know. Nobody goes there. It is upstream from Nelson Lake, and there is no real trail. If you hit it right, you can go directly up to the ridge above it that connects over the pass to Elizabeth Lake and the Elizabeth-Nelson Trail.