[
  { "name": "Rigi Kulm", "lat": 47.0550, "lon": 8.4850, "radius_m": 200 },
  { "name": "Uetliberg", "lat": 47.3490, "lon": 8.4910, "radius_m": 150 },
  { "name": "Grossmuenster Zuerich", "lat": 47.3702, "lon": 8.5439, "radius_m": 50 },
  { "name": "Pilatus Kulm", "lat": 46.9793, "lon": 8.2526, "radius_m": 200 },
  { "name": "Saentis", "lat": 47.2493, "lon": 9.3434, "radius_m": 200 }
]