Avalanche BTS Practical Effects Soundstage Prompt

Behind-the-scenes phone footage from inside a large practical-effects soundstage, shot vertically on a handheld modern smartphone. Scene context: a film crew is shooting an avalanche burying a miniature ski resort. A steep sculpted mountain slope set, dressed in white practical snow, descends to a 1:24 scale alpine village - timber chalets, a grand hotel, ski-lift pylons strung with cable and tiny gondola cabins, miniature pine forest. Above the peak, a scaffold gantry carries a row of huge white dump hoppers loaded with practical snow mix; two techs stand on the gantry at the release levers. First frame: already loaded and ready - the slope and village fill mid-ground screen-right, hoppers looming over the peak; in the foreground screen-left, within 1 meter of the phone, three crew in black EFFECTS CREW t-shirts stand behind a low containment wall, one on a cinema camera on rails, another on a headset with a hand raised. A huge blue chroma-key wall with orange cross markers rises behind the summit. A technocrane hangs above the set. Action and physics: a shout of "Action!" - the hopper gates bang open in sequence and a white mass avalanches down the slope with real weight and turbulence, the flow front splitting around a rock outcrop, snapping miniature pines flat, then slamming into the village: chalets buried to their rooflines, the hotel roof caving under the load, lift pylons folding one after another as the cable whips the gondola cabins down into the churn; the flow bursts over the containment lip and a fine powder cloud rolls across the stage floor, whiting out the frame as the crew shield their faces and stumble back. Camera: operator standing then backing away, phone in one hand at chest height, fast handheld pan following the flow from peak down to village, framing loose and reactive, hard jolt as the powder cloud hits, autofocus hunting through the whiteout, white flecks clinging to the lens in the final beat. 84° wide diagonal FOV, camera 2 meters from the containment wall. Lighting: overhead LED soft panel grid as primary source, top-front on the camera side, bright daylight-balanced, exposure locked for the white snow so foreground crew read darker; the powder cloud glows backlit under the panels. Audio: on-set ambient - a loud "Action!", the metal clang of hopper gates, a dense roar of cascading material, snapping model timber, the twang of the lift cable letting go, then shouting crew off-camera "Hold your marks! Keep rolling! Camera two, stay on the hotel!". Realistic amateur smartphone capture, natural handheld shake and rolling shutter, real practical snow on a real stage, sharp modern phone sensor detail, no captions, no on-screen text.