North facing slope, starting zone less than 35 degrees, but quickly steepens. Approximately 12 inches deep, 60 feet wide, ran approximately 500 vertical feet. After dropping several small cornices along the ridge with no noticeable activity, this slide released sympathetically about 20 feet below the ridge line.

Didn't go down to look at the crown, but I would guess this released on the surface hoar from a week or so ago.