diff --git a/example/old-bugs/add-markers-offscreen.html b/example/old-bugs/add-markers-offscreen.html
new file mode 100644
index 000000000..f0573dbab
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+++ b/example/old-bugs/add-markers-offscreen.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>Leaflet debug page</title>
+
+	<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4.4/leaflet.css" />
+	<!--[if lte IE 8]><link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4.4/leaflet.ie.css" /><![endif]-->
+	<script src="http://cdn.leafletjs.com/leaflet-0.4.4/leaflet-src.js"></script>
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<link rel="stylesheet" href="../screen.css" />
+
+	<link rel="stylesheet" href="../../dist/MarkerCluster.css" />
+	<link rel="stylesheet" href="../../dist/MarkerCluster.Default.css" />
+	<!--[if lte IE 8]><link rel="stylesheet" href="../../dist/MarkerCluster.Default.ie.css" /><![endif]-->
+	<script src="../../src/DistanceGrid.js"></script>
+	<script src="../../src/MarkerCluster.js"></script>
+	<script src="../../src/MarkerClusterGroup.js"></script>
+	<script src="../../src/MarkerCluster.QuickHull.js"></script>
+	<script src="../../src/MarkerCluster.Spiderfier.js"></script>
+</head>
+<body>
+
+	<div id="map"></div>
+	<button id="populate">Populate 1 marker</button>
+	<span>Bug <a href="https://github.com/danzel/Leaflet.markercluster/issues/69">#69</a>. Click the button 2+ times. Zoom out. Should just be a single cluster but instead one of the child markers is still visible.</span><br/>
+	<script type="text/javascript">
+
+		var cloudmadeUrl = 'http://{s}.tile.cloudmade.com/BC9A493B41014CAABB98F0471D759707/997/256/{z}/{x}/{y}.png',
+			cloudmadeAttribution = 'Map data &copy; 2011 OpenStreetMap contributors, Imagery &copy; 2011 CloudMade',
+			cloudmade = new L.TileLayer(cloudmadeUrl, {maxZoom: 18, attribution: cloudmadeAttribution}),
+			latlng = new L.LatLng(50.5, 30.51);
+
+		var map = new L.Map('map', {center: new L.LatLng(50.41, 30.51), zoom: 17, layers: [cloudmade]});
+
+		var markers = new L.MarkerClusterGroup({ animateAddingMarkers : true });
+		var markersList = [];
+
+		function populate() {
+			var m = new L.Marker(latlng);
+			markersList.push(m);
+			markers.addLayer(m);
+			return false;
+		}
+
+		map.addLayer(markers);
+
+		//Ugly add/remove code
+		L.DomUtil.get('populate').onclick = function () {
+			populate();
+		};
+	</script>
+</body>
+</html>
