{
  "params": {
    "rock": {
      "type": "choice",
      "options": [
        "sandstone",
        "ochre",
        "granite"
      ],
      "default": "sandstone",
      "label": "Rock",
      "describe": "Cliff stone: sandstone (red desert bands), ochre (yellow canyon), granite (grey mountain)."
    },
    "boarded": {
      "type": "toggle",
      "default": false,
      "label": "Boarded",
      "describe": "Planks nailed across the opening: an abandoned or condemned mine. The lantern is taken down."
    },
    "rails": {
      "type": "toggle",
      "default": true,
      "label": "Rails",
      "describe": "Narrow-gauge mine rails on sleepers running out of the tunnel (0.6 m gauge)."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 40,
      "step": 1,
      "default": 7,
      "label": "Seed",
      "describe": "Reshapes the rock face, the ore pile and the rubble. Same seed always builds the same mine."
    }
  },
  "presets": {
    "gold rush": {
      "rock": "ochre",
      "seed": 12
    },
    "abandoned mine": {
      "boarded": true,
      "rock": "granite",
      "seed": 3
    },
    "red canyon": {
      "rock": "sandstone",
      "rails": false,
      "seed": 21
    }
  },
  "night": {
    "lamp": {
      "zone": "lamp",
      "color": "#ffc46a",
      "intensity": 1.5,
      "describe": "Hanging lanterns at the mouth and deep inside the tunnel."
    }
  }
}