# hbmspace:martian_base

The Martian base of the Martian world preset.

The base generates once, at chunk (0, 0) of Duna, only in a world created with the `hbmspace:martian` preset. It places the template `hbmspace:duna_martian_base` with the processor list of the same ID; a missing processor list raises an error.

## Fields

| Field | Meaning and default |
| - | - |
| `biomes` | Vanilla structure biomes. |
| `spawn_overrides` | Vanilla spawn overrides. |
| `step` | Vanilla generation step. |
| `terrain_adaptation` (Optional) | Vanilla terrain adaptation; default `none`. |

## Example

Source path: `data/hbmspace/worldgen/structure/duna_martian_base.json`

```json
{
  "type": "hbmspace:martian_base",
  "biomes": [
    "hbmspace:duna_plains",
    "hbmspace:duna_lowlands",
    "hbmspace:duna_polar",
    "hbmspace:duna_hills",
    "hbmspace:duna_polar_hills"
  ],
  "spawn_overrides": {},
  "step": "strongholds"
}
```