Topographic mapping (1:50,000).
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Hjorsey 1955", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Topographic mapping (1:50,000).", "area": "Iceland - mainland.", "bbox": { "south_latitude": 63.34, "west_longitude": -24.66, "north_latitude": 66.59, "east_longitude": -13.38 }, "id": { "authority": "EPSG", "code": 6658 } }