Put in a skin track up adjacent lower angled terrain, avoiding a small, but well worn slide path with clear evidence of frequent avalanches over the years with lots of bent and flagged smaller trees. Retracing our track and skirting the same slope on the way out, it remotely triggered, breaking about 200' above us. We watched the slide strain through the small trees and finish up another 150' below our eerily close vantage point. The crown was at the tree line at the convexity marking the top of the slide path where the slope broke over to an estimated 40 degrees.