MS, TILT DOWN along trace of recent avalanche in the Purcell Mountains, a patch of snow has slid off rock face on mountain peak in spring (0:56). MLS of conifer trees on plateau, TILT UP to MWS of cirque glacier on mountain peak in spring, LS of meltwater stream flowing down mountainside, reverse shots (1:35). WS, PAN of snow-patched peaks, reverse shot (1:28).