# hbmspace:basalt_spikes

Moho basalt spikes.

Columns of the chunk in `biomes`, where the vanilla surface noise falls outside fixed bands, get a column of `block` up to 8 blocks high. Use it with an empty placement list.

## Fields

| Field | Meaning and default |
| - | - |
| `block` | Spike block. |
| `block.id` | Registered block ID. |
| `block.properties` (Optional) | Block-state property names and string values. |
| `biomes` | Biome ID, `#tag` or ID list. |

The top-level `type` selects this feature; the remaining fields belong beside it.

## Example

Inline feature of `data/hbmspace/worldgen/placed_feature/moho/basalt_spikes.json`:

```json
{"type": "hbmspace:basalt_spikes", "biomes": "hbmspace:moho_basalt_deltas", "block": "hbm:basalt"}
```