GeoJSON polygons are comprised of a series of rings, which are arrays of points (latitude & longitude pairs) like [100.1, 2.0]. Polygons typically have a single ring that represents the entity entirely.

For Polygons with multiple rings, the first must be the exterior ring and any others must be interior rings or holes.

Hover over the polygons on the map to highlight their respective arrays below.

{
  "type": "Feature",
  "geometry": { 
    "type": "MultiPolygon",
    "coordinates": [
      [
  [
  [102.0, 2.0], 
  [103.0, 2.0], 
  [103.0, 3.0], 
  [102.0, 3.0], 
  [102.0, 2.0]
]
],
      [
  [
  [100.0, 0.0], 
  [101.0, 0.0], 
  [101.0, 1.0], 
  [100.0, 1.0], 
  [100.0, 0.0]
],
  [
  [100.2, 0.2], 
  [100.8, 0.2], 
  [100.8, 0.8], 
  [100.2, 0.8], 
  [100.2, 0.2]
]
]
    ]
  },
  "properties": {
    "name": "Dinagat Islands"
  }
}