# Sediment deposits across a valley town

> A textured 3D mountain valley shows a debris-flow scenario through successive simulation states. Yellow and brown deposits cover the channel and valley floor, with red building markers, a color legend, small charts and final statistics.

- Kind: Video
- Page: https://meetreference.com/v/video-sediment-deposits-across-a-valley-town-dca976/
- Ready-to-use agent handoff: https://meetreference.com/v/video-sediment-deposits-across-a-valley-town-dca976/agent.txt
- Exact prompt as plain text: https://meetreference.com/v/video-sediment-deposits-across-a-valley-town-dca976/prompt.txt
- Authorship: AI-made, per the source
- Made with: Not stated
- Model: Claude Opus 5.5
- Built with: not stated
- Style: Math & science; 3d terrain, scientific visualization, simulation dashboard, map overlays, textured landscape
- Length and format: 56 sec, 16:9 (1280x720 source)
- Playback: a muted visual reference. The original soundtrack is available only at the source.
- Shared by @kisaka_ki in X, Oct 5, 2026: https://x.com/kisaka_ki/status/2107054815255859326
- Prompt fidelity: Verbatim. This is the complete prompt exactly as the creator published it.

## Before you start

Guidance from Reference, separate from the creator's instructions.

1. Read the reference and inspect the project, installed libraries, and available agent skills before writing code. Reuse suitable tools already present.
2. Prefer the creator-reported libraries and skills when they fit the task. Explain what useful additions help with, and install missing project dependencies or relevant skills from official sources when the environment and the user's existing permissions allow it. Respect the project's package manager and setup rules; do not ask again for routine setup already authorized.
3. Distinguish tools used by the creator from your own recommendations. A listed tool is not automatically required, and an empty tools or requirements list means the setup is unknown, not that nothing is needed.
4. Ask concise questions when missing inputs or choices materially affect the result: paid services, credentials, the user's assets, or a different production approach. Use existing answers and permissions; continue independent work while waiting.
5. If a useful library, skill, or service cannot be installed or used, explain an available alternative and its expected effect on quality, features, or effort. Get the user's choice before a material compromise; otherwise state the fallback and continue. Never silently simplify the result or claim to have used a tool you did not use.

## Recreating this video

These are the creator's published instructions, unedited.

## Prompt

```text
土石流の河床変動計算モデルを作って
３Dでイラストか実際の上空写真のようなものを張り付け、どこにどうたまったかを可視化した動画を作って
地形は好きにどうぞ
堆積氾濫するほうがみやすくてgood
```

## What it looks like

Written by Reference from the video frames, not by the creator.

An elevated view of a debris flow traveling down a mountainside and forming a broad sediment deposit on the valley floor.

- Color: Dark green hills, muted green terrain, and yellow, tan, and orange sediment, with small gray-blue structures.
- Type: 3D digital terrain visualization.
- Framing: Oblique view centered on a channel running from the upper slope into a flatter, developed valley.
- Structure: A winding flow path descends between steep hills, then widens into a fan-shaped deposit across gridded terrain and scattered buildings.

Storyboard, nine frames spread across the video: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/storyboard.webp

- Frame 1 at 3.1s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f1.webp
- Frame 2 at 9.4s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f2.webp
- Frame 3 at 15.6s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f3.webp
- Frame 4 at 21.9s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f4.webp
- Frame 5 at 28.1s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f5.webp
- Frame 6 at 34.3s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f6.webp
- Frame 7 at 40.6s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f7.webp
- Frame 8 at 46.8s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f8.webp
- Frame 9 at 53.1s: https://meetreference.com/media/video-sediment-deposits-across-a-valley-town-dca976/f9.webp

## Links

- Watch: https://x.com/kisaka_ki/status/2107054815255859326
- Original post: https://x.com/kisaka_ki/status/2107054815255859326
- Discovery collection: https://data.openchamber.dev/opus-5-5-videos/v/kisaka_ki-2107054815255859326