Thank you for posting the great pics.
I think I see some Tibetan Prayer Flags in Geologists cabin opposite the window. Are they still there? I hung those across the main window years ago and in any subsequent trip report they were gone. Figured someone took them. I hope they are still there.
You saw the ringtail at Briggs. LUCKY! I know one lives at Stone and my friend saw one at Briggs in basically the same spot you caught it. They are so neat. I know the info is out there but keeping the crap out of those special places is important. Not talking only of rodent droppings either. Human crap is just that-CRAP.
Sadly yes trails are closed all the time on the premise of protecting lands. We are losing so many that were accessible not so long ago. I can't believe there are shuttles to Reds Meadow. I camped there years ago and hiked from there to Rainbow Falls, up to Devils Postpile, and back to Reds.
Please PM those of us in the know if you have questions about certain locations and how to get there if you have not already found it on the web via searching. There are treasures to be protected out there. Also watch Sierra Club and the like and their actions. Fight to keep places open.