Key:tunnel - OpenStreetMap Wiki

Key:playground - OpenStreetMap Wiki

Fi:Key:tunnel - OpenStreetMap Wiki

Key:layer - OpenStreetMap Wiki

Key:ele - OpenStreetMap Wiki

Key:playground - OpenStreetMap Wiki

Key:level - OpenStreetMap Wiki

Making OSM Better For Routing. by: Monica Brandeis, by Spatial Dev, Unearth

Twin Peaks Tunnel - Wikipedia

File:Map your world 2009 OSM-Objekte-Katalog.pdf - OpenStreetMap Wiki

Key:temporary - OpenStreetMap Wiki

Key:bridge - OpenStreetMap Wiki