A Description of Lit Trips taken from the Official Lit Trip Site:
The short version is simple. Google Lit Trips are free downloadable files that mark the journeys of characters from famous literature on the surface of Google Earth. At each location along the journey there are placemarks with pop-up windows containing a variety of resources including relevant media, thought provoking discussion starters, and links to supplementary information about “real world” references made in that particular portion of the story.

Owl Moon Lit Trip by Jane Yolen