I saw this from the itsection of N 850 and Nebo ave. I couldnt tell what the line across the the face below the ridgeline was so I shot these images with a 600mm telephoto lens fully zoomed its the southwest slope between Ben Lomond and Chilly Peak. Seems a couple days old but havent been able to see that high in over a week. screenshot is of the estimated point of the debris field. I hope im wrong but this looks big.