I've just noticed that Google Maps is finally allowing you to see data for terrain - great if you're planning a road trip and want to check the route for hilly stretches!
Sadly, Bristol is quite hilly... (I knew that already)... http://maps.google.co.uk/?ie=UTF8&ll=51 ... 6&t=p&z=13
Zoom into the high detail (high scale) and you'll see the contour lines appear.
![Smile :)](./images/smilies/icon_smile.gif)
Nikki.