www.youtube.com has updated version. Demonstration of how to use topo maps, or topgraphical maps, on an Android phone such as a G1 or Droid using the Backcountry Navigator app. from www.backcountrynavigator.com Demonstrates previewing the maps, choosing a place, and selecting an area for download. Demonstrates a download of tiles for offline use. Shows navigation on the topo map using the Android gps.