Avalanche on twin lakes/lost lakes

Details are very few. More info will be posted as it becomes available. Time is approx. Numerous tracks on slope prior to avalanche event.

First additional info: "This slide was triggered by a snow bike. He made a high mark and by the time he cleared halfway across slope trucks size snow boulders started to fall then the whole slope slid 200-250 ft across. Leaving a massive crown 15-20 ft.  Ran across lake about 100-150 ft. Everyone luckily escaped or was just out of reach."