Size 3 avalanche on ridgeline south of K&C hut

Observed a large crown when looking back towards Cowboy and K&C hut, whilst skinning up to Oboe summit. From lower elevations only part of the slide was visible. But from a higher vantage point the rest of the propagation was apparent. Unsure of when exactly the slide may have occurred. It was not observed when skinning into K&C on Saturday afternoon, although that ridgeline was somewhat obscured by cloud at the time.