diff --git a/sandbox/wmts/README.md b/sandbox/wmts/README.md
index e69de29..50faae9 100644
--- a/sandbox/wmts/README.md
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@@ -0,0 +1,6 @@
+How to display a WMTS in Leaflet?
+=================================
+
+
+See https://geoservices.wallonie.be/arcgis/rest/services/IMAGERIE/ORTHO_LAST/MapServer/WMTS/1.0.0/WMTSCapabilities.xml
+