https://tools.ietf.org/html/rfc7946#section-5
A GeoJSON object MAY have a member named "bbox" to include information on the coordinate range for its Geometries, Features, or FeatureCollections.
The value of the bbox member MUST be an array of length 2*n where n is the number of dimensions represented in the contained geometries,
with all axes of the most southwesterly point followed by all axes of the more northeasterly point.
The axes order of a bbox follows the axes order of geometries.
Bounding box
https://tools.ietf.org/html/rfc7946#section-5 A GeoJSON object MAY have a member named "bbox" to include information on the coordinate range for its Geometries, Features, or FeatureCollections. The value of the bbox member MUST be an array of length 2*n where n is the number of dimensions represented in the contained geometries, with all axes of the most southwesterly point followed by all axes of the more northeasterly point. The axes order of a bbox follows the axes order of geometries.