Miniature Railway Bridge Built by Colossal Hands in Alpine Scenery

A hyper-realistic tilt-shift macro photography video sequence of building a grand miniature railway bridge in a scenic alpine landscape. The video features giant human hands interacting with a detailed stone viaduct, river, and mountain background. 
Scene 1: A giant human hand precisely places a key stone block onto the arch of a massive stone viaduct bridging a rushing turquoise river and waterfall, with snow-capped mountains and pine forests in the background. 
Scene 2: Giant hands carefully assembling stone pavers and placing metallic tracks onto the wooden railway sleepers of the curved bridge. 
Scene 3: A close-up shot of a giant hand tightening screws with a tiny tool, brushing the tracks, and wiping them clean with a microfiber cloth. 
Scene 4: A vintage steam train with billowing white smoke and green carriages chugs smoothly along the newly built railway track across the viaduct, winding into a tunnel amidst the majestic mountains. 
Cinematic depth of field, 8k resolution, photorealistic diorama style, smooth motion --ar 9:16