# GPT Image Hub prompt

## Battle of Calth Underground Confrontation
- URL: https://www.gptimagehub.com/library/battle-of-calth-underground-confrontation
- Generator URL: https://www.gptimagehub.com/generate?promptId=oss-ym-g2-36359
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Flibrary%2Fbattle-of-calth-underground-confrontation
- Category: Concept Art
- Model: seedream-4-5
- Aspect ratio: 16:9
- Style: illustration
- Tags: warhammer 40k, battle of calth, ultramarines, word bearers, grimdark, concept art, sci-fi battle
- Updated: 2026-10-27T04:09:38.098Z
- Created: 2026-10-27T04:09:38.098Z

Renders an intense subterranean battle between Word Bearers and Ultramarines beneath Calth. Adjust the Legion factions, armor damage, or tunnel environment to fit other Heresy battles.

### Full prompt
```text
Grimdark sci-fi concept art depicting the underground Battle of Calth after the surface was scoured by the Veridian star. [Word Bearers legionnaires in crimson armor] advance relentlessly through ruined subterranean arcologies. Facing them, [Ultramarines in cobalt blue armor] hold defensive choke points inside dark, industrial tunnels. Dramatic cinematic lighting with harsh muzzle flashes, sparks, and distant smoke cutting through deep cavernous shadows, surrounded by shattered plasteel and concrete debris.
```