{
  "feature": "magical_addons:deepslate_column",
  "placement": [
    {
      "type": "minecraft:count",
      "count": 64
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:surface_water_depth_filter",
      "max_water_depth": 0
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR"
    },
    {
      "type": "minecraft:biome"
    }
  ]
}