via:geojson.io

map.geojson

{
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "properties": {},
            "geometry": {
                "type": "Point",
                "coordinates": [
                    -2.4609375,
                    51.17934297928927
                ]
            }
        }
    ]
}