Great additional info from the observation author in a post on AK Snow Shredder 2.0. "A fairly low angle slope, no glide cracks and no wind loading. It was pretty cold, dry snow and was set up pretty hard. Buddy went up and over the top and a few seconds later it let loose. We were luckily fair away from the run-out area, but got to see first hand how much force and speed this had coming down. If we were any closer I could see it easily out running us. Another thing to think about, a radio would have saved my buddy his sled today. We all have them, but he forgot his at home. He didn't know it let loose and there was no way for him to see us waving him away as he came back down. He didn't see it let loose and went over the crown, he tried to ride it down but the debris kicked him off. His machine rolled the entire way down. No one was hurt and we got out of there towing his machine. Just wanted to share, definitely will be more aware of where I stop while people are climbing. If I had tried high marking at the same time as him or right after him I would not have made it outta there. This looked like the least suspect slope for a slide and here it is. Be safe out there riders."