But it's especially great for (you know where this is going) helping us geocachers scout out the terrain of our next geocaching hunt. You can simply enter the coordinates of your favorite cache in the search box, and it'll zoom right in to the location for you:
Google Earth also includes a vast array of data layers, such as roads, borders, and places of interest, that you can turn on and off to suit your needs. It even allows you to create your own layers, or placemarks, as specially formatted files for Google Earth, called KML files.
If you get tired of entering all of your cache coordinates into the search box, Geocaching.com offers a nifty little Google Earth data layer tool that will automatically display all of the geocaches in any Google Earth window that you have opened or are zoomed in to. The data from Geocaching.com that is displayed in Google Earth includes the type of listing (Traditional, Multi-cache, etc.) and other data to help you browse caches in a dynamic mapping interface.
To use this tool, first you need to download and install Google Earth on your computer. You can get a copy from the Google Earth web site. Then, download the geocaching add-on tool from the "My Account" page in Geocaching.com (you must be a premium member). On the right side of the page you will see a link to "Download Geocache Browser in Google Earth". After you save the GeocachingNetworkKML.kml file to your PC, either double-click it, or open it from within Google Earth. In a few seconds, you should see all the geocaches located within the area framed in your Google Earth window: