Conducting field research in the dense forests of the Peten, northern
Guatemala, is as difficult today as it was for A. V. Kidder 70 years
ago. However, through the use of airborne and satellite imagery we are
improving our ability to investigate ancient Maya settlement,
subsistence, and landscape modification in this dense forest region.
Today the area is threatened by encroaching settlement and
deforestation. However, it was in this region that the Maya
civilization began, flourished, and abruptly disappeared for unknown
reasons in the ninth century a.d. At the time of its collapse
it had attained one of the highest population densities in human
history. How the Maya were able to manage water successfully and feed
this dense population is not well understood at this time. A project
funded by the National Aeronautics and Space Administration (NASA) used
remote-sensing technology to investigate large seasonal swamps
(bajos) that make up 40% of the landscape. Through the use of
remote sensing, ancient Maya features such as sites, roadways, canals,
and water reservoirs have been detected and verified through ground
reconnaissance. The results of this preliminary research cast new light
on the adaptation of the ancient Maya to their environment.
Microenvironmental variation within the wetlands was elucidated and the
different vegetation associations identified in the satellite imagery.
More than 70 new archaeological sites within and at the edges of the
bajo were mapped and tested. The combination of satellite
imagery and ground verification demonstrated that the Maya had modified
their landscape in the form of dams, reservoirs, and possible drainage
canals along the Holmul River and its tributaries. The use of Landsat
Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM), 1-m IKONOS
satellite imagery, as well as high-resolution airborne STAR-3i
radar imagery—2.5 m backscatter/10 m Digital Elevation Model
(DEM)—are opening new possibilities for understanding how a
civilization was able to survive for centuries on a karst topographic
landscape. This understanding is critical for the current population
that is experiencing rapid population growth and destroying the
landscape through non-traditional farming and grazing techniques,
resulting in socioeconomic problems.