From Great Lakes Wiki
Adding a google map to the Wiki is easy.
First, click on the "edit" command for an entry you want to add a map to. If you are using a supported browser (Internet Explorer for Windows, Firefox for any operating system), then just click the little grey box just above the left-hand corner of the editing window. Navigate in the resulting box to your area. A fast way is to search for the name of a nearby town and its state. From there you can set a centerpoint and zoom level. Just click a point to add markers - you can enter a description once you have added the marker. Be sure to click "save" at the bottom of the window used to edit the point.
Using standard Wiki coding (or editing symbols), you can link marker descriptions to articles on the Wiki or externally. Set the image as a map, satellite or hybrid.
Finally, copy the code that is generated below.
It looks like this:
<googlemap lat="42.732797" lon="-84.513381" type="satellite" zoom="16">
42.730448, -84.511228, Point one.
42.731895, -84.514806, Point two. [[Main Page]]
</googlemap>
and will generate a map that looks like this:
Paste the code where you want it in the wiki article. Save the page.
(Alternately, you can write that code yourself, if you know the longitude and latitude of the points you wish to add, as well as your centerpoint and zoom level.)
