Whistler Musical Bumps

One track coming in, one coming out (not our party) Everyone involved is safely out.

Facets size up to 1.5mm above and below the December crust. Temp gradient 2 degrees per 10cm through the crust. Our pit was in more wind prone area, so the depth of the failure was at 37cm. But loaded zones have up to 80cm on top of the crust.