It appears that the whole family slid naturally.. all seven sisters. Aspects were east, NE and N. Observed from a far distance but I'm sure the crowns are at least 6-7 feet. It appears limits were connected, making this avalanche about 3 miles wide. difficult to say when it avalanched but it looked to be within the last day or two. The photo shows 3 of the sisters and I was unable to get a better viewpoint as my camera died.

The size of this avalanche was mind boggling.