Our group was walking the Park City Ridgeline exploring the various activity from the past 2 days. As we were looking at the cornice on Conehead above Dutch Draw we witnessed a snowboarder walk along the ridge, out onto the cornice and break the cornice off riding it down ~6-8'. He hesitated for a few minutes, then put his board on and rode down about 1/3 of the slope, then stopped mid-slope (and mid-path) and took photos of the slide. Had he not stopped when he broke off the cornice, he would have had a very dangerous ride.

The slide ran ~2/3 of the slope and left some large debris chunks.

I believe the slide would be classified HS-ACu-R1-D2-I