Skiers right side of West Monitor, remotely triggered from quite a distance away, walking along the flats felt a large collapse and with how the day was going figured there would be an avalanche. We were too far away to see the slide but just kept our eyes peeled on the run out, sure enough spotted a large powder cloud in the bottom of the bowl. When we got to where we could see the actual slide noted that the week layer was facets on the ground, took out the whole seasons snow pack. Numerous pockets comprised this large avalanche. Snow pack was not happy today, all the slides noted were set off remotely from a good distance away on flat terrain.