Last Fall, the park was alerted to some potential loose rock around Shirt Tail. I did a couple of inspection/mitigation trips over the winter. This is a picture of about the same spot in December 2012:
Some time in March, and again a few weeks ago, some bigger stuff slid.
It's been a tough winter/spring for freeze/thaw. Big stuff is coming down all over the place. The trail from Rincon to Cadillac is a mess, the Wind Tower trail got smacked, and I think there's more to come. Heads up.