Google Maps Draw Polygon Online. The instructions are a little unclear on hole creation. Choose the Polygon Draw mode.
You can also save driving bicycling or walking directions to the map. The same tool with Version 3 is here. Learn how to create your own.
The same tool with Version 3 is here.
This task was possible with Overlay Map V1 but Google Map has removed that class from V2. This map was created by a user. As you click on the Google Maps interface to create vertices for the polyline or polygon the KML text will be updated in real-time in a text window to the right of the map. KML or Javascript code with latitude and longitude for the clicked points is presented in the textarea.