At the GT Ledge last weekend I encountered a microfridge size rock teetering over the Guides Wall.
I believe I was on Triple Bulges, but by the descriptions, I could well have been the top of Delusions of Grandeur or Hyjek's.
About 10 feet climber's right of a rotten white wall on the GT Ledge if that's a landmark to anyone, and about 35 feet right of the Le Teton gully.

FYI