     mapUrl = "https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=#{token}"
     grayscale = L.tileLayer mapUrl, id: 'mapbox.light'
     streets = L.tileLayer mapUrl, id: 'mapbox.streets'
+    satellite = L.tileLayer mapUrl, id: 'mapbox.satellite'
 
     layers = [grayscale]
 

    colors =
        1: 'red'
        2: 'blue'
    colors[id]

    baseLayers =
        Grayscale: grayscale
        Streets: streets
        Satellite: satellite

    L.control.layers(baseLayers, overlays).addTo(map)

