This KML network link displays the topographic map from www.komoot.de as a map overlay in in Google Earth. Among all the OSM topographic maps with contour lines that we are aware of, Komoot currently has the best looking with world wide coverage. Komoot itself was founded in 2010 as a spinoff at the Technical University Berlin, Germany, and offers mobile apps for routing for outdoor activities. See also http://wiki.openstreetmap.org/wiki/Komoot.
For some information on how it works, please see the main page and the FAQ.
To get started, simply download all 10 OpenStreetMap map overlays on this site.(please log in first, see here why) and open it in Google Earth. Or checkout
Do you have comments, bug reports, or suggestions for other map sources? Please leave them below.