Smithsonian: Aerial Photography as Archaeological Tool

Smithsonian Magazine looks at the popularity of using aerial photography to do archaeological surveys, not only to make new discoveries, but to preserve sites threatened by time and circumstance.

In a recent book by Georg Gerster, The Past From Above: Aerial Photographs of Archaeological Sites, "places we've seen a thousand times in pictures from ground level take on a whole new meaning." Sites considered range from Stonehenge to the Nazca lines.