diff --git a/lib/config.js b/lib/config.js
index 5b8ab36..eeaa8fa 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -1,5 +1,6 @@
 define({
   "dataPath": "https://map.luebeck.freifunk.net/data/",
   "siteName": "Freifunk Lübeck",
+  "mapSigmaScale": 0.5,
   "showContact": true
 })
diff --git a/lib/forcegraph.js b/lib/forcegraph.js
index 9835df2..4e621cf 100644
--- a/lib/forcegraph.js
+++ b/lib/forcegraph.js
@@ -1,5 +1,5 @@
 define(["d3"], function (d3) {
-   return function (linkScale, sidebar, router) {
+   return function (config, linkScale, sidebar, router) {
     var self = this
     var nodes, links
     var svg, vis, link, node
diff --git a/lib/gui.js b/lib/gui.js
index 2439a99..fd05def 100644
--- a/lib/gui.js
+++ b/lib/gui.js
@@ -26,7 +26,7 @@ function (chroma, Map, Sidebar, Tabs, Container, Meshstats, Linklist,
     function addContent(K) {
       removeContent()
 
-      content = new K(linkScale, sidebar, router)
+      content = new K(config, linkScale, sidebar, router)
       contentDiv.appendChild(content.div)
 
       if (latestData)
diff --git a/lib/map.js b/lib/map.js
index 65bca05..69b9f1a 100644
--- a/lib/map.js
+++ b/lib/map.js
@@ -1,4 +1,4 @@
-define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
+define(["d3", "leaflet", "moment", "leaflet.label"], function (d3, L, moment) {
   var options = { worldCopyJump: true,
                   zoomControl: false
                 }
@@ -54,9 +54,9 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
    var iconAlert   = { color: "#D43E2A", radius: 6, fillOpacity: 0.5, weight: 2, className: "stroke-first node-alert" }
    var iconNew     = { color: "#558020", radius: 6, fillOpacity: 0.5, weight: 2, className: "stroke-first" }
 
-   return function (linkScale, sidebar, router) {
+   return function (config, linkScale, sidebar, router) {
     var self = this
-    var groupOnline, groupOffline, groupNew, groupLost
+    var barycenter
 
     var el = document.createElement("div")
     el.classList.add("map")
@@ -74,6 +74,22 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
     var nodeDict = {}
     var linkDict = {}
 
+    function calcBarycenter(nodes) {
+      nodes = nodes.map(function (d) { return d.nodeinfo.location })
+      var lats = nodes.map(function (d) { return d.latitude })
+      var lngs = nodes.map(function (d) { return d.longitude })
+
+      var barycenter = L.latLng(d3.median(lats), d3.median(lngs))
+      var barycenterDev = [d3.deviation(lats), d3.deviation(lngs)]
+
+      var barycenterCircle = L.latLng(barycenter.lat + barycenterDev[0],
+                                      barycenter.lng + barycenterDev[1])
+
+      var r = barycenter.distanceTo(barycenterCircle)
+
+      return L.circle(barycenter, r * config.mapSigmaScale)
+    }
+
     self.setData = function (data) {
       nodeDict = {}
       linkDict = {}
@@ -81,6 +97,8 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
       var lines = addLinksToMap(linkDict, linkScale, data.graph.links, router)
       L.featureGroup(lines).addTo(map)
 
+      barycenter = calcBarycenter(data.nodes.all.filter(has_location))
+
       var nodesOnline = subtract(data.nodes.all.filter(online), data.nodes.new)
       var nodesOffline = subtract(data.nodes.all.filter(offline), data.nodes.lost)
 
@@ -101,10 +119,10 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
           return iconLost
         }, router))
 
-      groupOffline = L.featureGroup(markersOffline).addTo(map)
-      groupOnline = L.featureGroup(markersOnline).addTo(map)
-      groupNew = L.featureGroup(markersNew).addTo(map)
-      groupLost = L.featureGroup(markersLost).addTo(map)
+      L.featureGroup(markersOffline).addTo(map)
+      L.featureGroup(markersOnline).addTo(map)
+      L.featureGroup(markersNew).addTo(map)
+      L.featureGroup(markersLost).addTo(map)
     }
 
     function resetMarkerStyles(nodes, links) {
@@ -124,18 +142,7 @@ define(["leaflet", "moment", "leaflet.label"], function (L, moment) {
     function resetView() {
       resetMarkerStyles(nodeDict, linkDict)
 
-      var bounds = L.latLngBounds([])
-      bounds.extend(groupNew.getBounds())
-      bounds.extend(groupLost.getBounds())
-
-      if (!bounds.isValid())
-        bounds.extend(groupOnline.getBounds())
-
-      if (!bounds.isValid())
-        bounds.extend(groupOffline.getBounds())
-
-      if (bounds.isValid())
-        setView(bounds)
+      setView(barycenter.getBounds())
     }
 
     function goto(dict, id) {