Pictures showed a HUGE hole in the asphalt driveway. You could walk through the hole in the wall. Fortunately, there was never an investigation; it was just assumed that the boulder came loose and slid down the mountain. Had anyone gone up there, they would've seen that it had been clearly dug out.
Like Kris, it involved a dead tree, not a big a tree, but much more elevation.
Twas' a peak bagging trip to North Guardian Angel in Zion. I was first down the rappels and the only plausible direction went too close for comfort to a large precariously perched dead Pinion or Juniper. I didn't want anyone to knock it down on me so I gave it a nudge with my foot to check for stability and down it went.
All the way towards the Subway about 3000 feet below.
Mr. Way and I did the flake that you used to stand on for the belay of Anticipation on Arch Rock. It was a winter day in the late 80s and we were the only ones up there. Went a long way down the scree.
My wildest trundle would be losing my Chouinard hammer off Broad Ledge on the Salathe while climbers were messing around at the base of that wall on short climbs, namely Roger Breedlove et al.
Not a great moment for me since there was great risk to those down in the talus. Roger returned it to me; the handle had broken on the way down. I later sent it to Chouinard and they sent it back with a new handle, amazingly.